Chris Bumstead Hamstring Workout: Build a Classic Posterior Chain
UPLIFT IRON CLUBChris Bumstead’s hamstring training is useful for one reason above all: it shows how a Classic Physique leg is built from more than squats and quad work. Across different prep phases and coaches, his sessions repeatedly combine knee-flexion curls, hip hinges, controlled tempo work and stable single-leg movements. The exact exercise order changes, but the pattern is remarkably consistent.
That matters because the hamstrings do two major jobs in training. They flex the knee, which is why leg-curl variations matter, and they help extend the hip, which is where Romanian deadlifts, back extensions and similar hinges come in. If your leg day only has squats and leg presses, you may train the hamstrings indirectly, but you are leaving a lot of posterior-chain development on the table.
The goal here is not to copy one Chris Bumstead workout line for line. His training has changed across Olympia preps, injury management, coaches and recovery needs. Instead, this guide pulls out the recurring principles and turns them into a practical hamstring-focused session for lifters chasing a thicker, more balanced classic-physique look.
1. Start With a Leg Curl to Make the Hamstrings Work Early
One pattern that appears repeatedly in Bumstead’s hamstring sessions is starting with a curl variation. In different workouts that has meant lying curls, standing single-leg curls or seated curls. The common idea is to load knee flexion while the hamstrings are fresh instead of treating curls as a throwaway finisher.
That is useful for hypertrophy because squats and leg presses do not train the knee-flexion function of the hamstrings very directly. A controlled curl lets you shorten the muscle hard at the top and, depending on the machine, challenge it through a long range of motion without your grip or lower back becoming the limiting factor.
For most lifters, 3–4 working sets is enough. Use a load that lets you control the eccentric for roughly two to four seconds and reach a strong contraction without the hips bouncing off the pad. Bumstead has used slower negatives and pauses in multiple sessions. The point is not to worship an exact tempo; it is to stop turning curls into momentum reps.
If your gym has both seated and lying machines, rotate them across training blocks rather than assuming one is universally superior. The seated version places the hip in more flexion and can create a strong stretch sensation, while the lying version is simple, stable and easy to progress. Pick the one you can execute consistently and track.
2. Use Tempo and Lengthened Control Instead of Chasing Sloppy Load
Bumstead’s hamstring sessions often look harder than the exercise list suggests because the difficulty comes from execution. Slow eccentrics, pauses, one-and-a-half reps and controlled stretches have all appeared in his workouts. Those methods create more tension without requiring every set to become a load contest.
One well-known session used tempo work and a tri-set built around seated curls, hyperextensions and cable pull-throughs before Romanian deadlifts. In another, slower negatives and pauses were used on curl variations. The transferable lesson is that hamstrings respond well when you stop rushing the part of the rep where they are lengthening.
For a normal lifter, that might mean lowering a curl under control for three seconds, pausing briefly in the stretched position, then curling hard without jerking. On an RDL, it means keeping the bar close, pushing the hips back and stopping when you have reached the deepest position you can own without losing spinal position or turning the rep into a lower-back exercise.
Advanced intensity techniques should be optional. Bumstead can use drop sets, forced reps and dense tri-sets because he has years of training skill and knows how his body responds. You can get most of the benefit by making ordinary sets technically demanding before adding extra fatigue.
3. Put the Romanian Deadlift Where Your Lower Back Can Support It
The Romanian deadlift is one of the best bridges between hamstring size and posterior-chain strength. It trains the hamstrings at the hip while also demanding glute, trunk and upper-back control. Bumstead has used dumbbell and machine-supported hinge variations across different training phases, but one detail from his own commentary is especially useful: exercise order has to respect lower-back fatigue.
After performing a dense sequence of hamstring work in one session, he noted that the RDL probably belonged earlier because his lower back was already fatigued. That is a good reminder that an exercise can be excellent and still be badly placed. If your spinal erectors are cooked before you hinge, your hamstrings may never receive the quality loading you intended.
For most lifters, putting the RDL second or third—after one curl but before high-fatigue supersets—is a strong default. Three sets of 6–10 controlled reps works well. Use straps if grip is limiting the target muscles, and stop the descent where your hamstrings are loaded but your pelvis and spine remain controlled.
You do not need to touch the floor. You do not need maximal weight. The best rep is the one where the hips travel back, the knees stay softly bent, the hamstrings lengthen under tension and the torso rises because the hips extend—not because you yank the weight with your back.
4. Add a Stable Single-Leg Movement for Glutes and Hamstrings
Bumstead has used Bulgarian split squats in hamstring-and-glute-focused work, including heavy versions under Hany Rambod. That may look like a quad exercise on paper, but stance, torso angle and knee travel can shift how much the glutes contribute. More importantly, a unilateral movement adds something curls and RDLs do not: one-leg stability under meaningful load.
You do not need to copy a 150-pound dumbbell split squat. Use a load that lets you descend under control, keep the front foot planted and drive through a stable position. A slightly longer stance and modest forward torso angle can make the glute contribution more obvious, while the hamstrings help stabilize the hip and knee.
Three sets of 8–12 reps per side is plenty. If balance is the limiting factor, hold a rack upright lightly with one hand and load the other side. Stability support is not cheating when the goal is hypertrophy; it often lets the target leg work harder because you are not wasting effort trying not to fall over.
Other good options include reverse lunges, step-ups or a single-leg press. The principle is more important than the exact exercise: include one stable unilateral pattern that complements the bilateral hinge and curl work.
5. Finish the Posterior Chain Without Turning the Session Into Junk Volume
Bumstead’s sessions have also included back extensions, cable pull-throughs, belt squats, hip thrusts and additional curl variations. Those are useful tools, but the lesson is not to stack all of them into every workout. Once the hamstrings have already been trained through knee flexion and hip extension, the final movement should fill a gap rather than repeat fatigue for its own sake.
If your RDL was strong but your glutes barely felt involved, a 45-degree back extension or cable pull-through can add controlled hip-extension work. If your hip hinge was limited by your lower back, a machine curl gives you more direct hamstring work without asking the trunk to stabilize another heavy set. If your glutes are a priority, hip thrusts can be added without turning the session into another squat workout.
Two or three hard sets is usually enough for the final slot. Keep roughly one to two reps in reserve unless you are using a stable isolation machine where failure is easy to control. More exercises are not automatically more complete. A classic posterior chain is built by repeatedly progressing high-quality work, not by collecting every hamstring movement in the gym.
A practical CBum-inspired hamstring workout
If you want the recurring principles without copying a specific prep session, use this structure:
- Seated or lying leg curl: 3–4 sets of 8–12 reps with a controlled eccentric.
- Romanian deadlift: 3 sets of 6–10 reps, stopping at the deepest controlled stretch.
- Second curl variation: 2–3 sets of 10–15 reps, using a different machine or hip position from the first.
- Bulgarian split squat or reverse lunge: 3 sets of 8–12 reps per leg.
- Back extension, cable pull-through or hip thrust: 2–3 sets of 10–15 reps as an optional posterior-chain finisher.
Run this session once per week at first and judge it by recovery, not soreness. If your hamstrings are still so fatigued that your next lower-body workout loses strength, remove a finisher set before adding more rest days or complicated recovery tricks. If you recover easily and your reps are climbing, keep the structure unchanged long enough to measure real progress. Hamstrings often respond better to months of repeatable loading than to constantly changing exercises.
You can also split the work across two leg days. Put the RDL and one curl on the first day, then use a second curl plus the unilateral movement later in the week. That approach spreads local fatigue while still giving the hamstrings repeated exposure to both knee flexion and hip extension.
That gives you both major hamstring functions, a unilateral leg movement and enough glute work to create a complete rear-chain session without burying recovery. If you already train legs twice per week, this can be the hamstring-dominant day while the other session puts more emphasis on quads.
Progress the basics before adding more techniques. First add reps inside the target range. Then add a small amount of weight while keeping the same control. Only after that should you experiment with slower eccentrics, drop sets or dense tri-sets. If those methods make your performance collapse for the rest of the workout, they are costing more than they are giving you.
Why this works for a classic-physique look
Classic Physique rewards the leg from every angle. Big quads matter, but side and rear poses expose whether the posterior chain has enough thickness and separation to match the front. Hamstrings create the sweep under the glutes and give the leg a finished look rather than a quad-dominant silhouette.
The useful part of Bumstead’s approach is the balance between isolation and compound work. Curls let you attack knee flexion directly. RDLs load the hamstrings through hip extension. Split squats and glute-focused work add mass around the hip. When those patterns are trained consistently, the posterior chain develops as a system instead of an afterthought.
That is the real takeaway: do not search for one magic CBum hamstring exercise. Build a session where each movement has a distinct job, control the lengthened portions, respect lower-back fatigue and progress the work for months. That is much closer to the logic behind a Classic Physique posterior chain than copying one viral set.
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