A 50-35-21-14 rep ladder builds muscle but will not raise your one-rep max
In short
A descending rep ladder of 50-35-21-14 produces 120 reps per exercise, or 720 across six exercises. Loads that allow 50 reps sit at roughly half of a one-rep max or less, and sets taken close to failure at those loads have repeatedly been shown to build muscle about as well as heavy ones. Maximal strength is the exception: it responds far better to heavy, low-rep work, so a relative strength score built from Big 3 one-rep maxes will barely move on this routine alone.
Lenny Kravitz is 62 and has trained with the same coach since the late 1990s — close to thirty years. The routine he shared runs six exercises for four sets of 50, 35, 21 and 14 reps: underhand lat pulldown, machine chest fly, seated triceps extension, superman, hanging ab crunch, and a seated biceps curl into an Arnold press.
Start with the arithmetic. That is 120 reps per exercise and 720 reps across the session. Almost everything worth knowing about what this routine does — and does not do — falls out of that number.
How light is a load you can lift 50 times?
Hitting 50 reps on the first set generally means a load at or below half your one-rep max. So the whole routine lives in low-load, high-rep territory. That is not a dismissal: sets taken close to failure at light loads have repeatedly produced hypertrophy comparable to heavy sets. For building muscle, this works.
Maximal strength is where it stops. Max strength is not purely a function of muscle size; it depends on how many motor units the nervous system recruits and how fast, and that capacity develops by actually handling heavy loads. It is why a bigger muscle does not automatically come with a bigger one-rep max (see size versus strength).
What the exercise selection tells you
- Nothing in the list can be loaded heavily. Pulldowns, machine flyes, seated extensions and curls are all machine or single-joint work.
- No squat, no hinge, no horizontal press. There is no lower-body training in the session at all.
- Superman and hanging crunches are trunk work — they occupy the slot people think of as the ab routine.
As a way to look a certain way, this is a sensible selection: frequent, high-volume work for visible upper-body and trunk muscles at low joint cost. That is probably why it has survived thirty years and still runs at 62. But it is a physique-maintenance routine, not a strength program.
The abs are not built by the crunches
Visible abs are decided by body fat percentage, not crunch count. Seven hundred reps burn real calories and help hold muscle, but what uncovers the midsection is diet. No rep scheme reorders that.
Six consecutive high-rep ladders generate serious session fatigue. If heavy squats or deadlifts are in the same week, put the heavy work first and the ladders after — never the other way round.
How to combine the two
The ladder does not have to go. Its placement does. Train the Big 3 in the 3–5 rep range twice a week, and use high-rep work as accessory volume on the remaining days. Which of volume or intensity to adjust first is covered in volume versus intensity.
A strength score does not count reps
A relative strength score is calculated from squat, bench press and deadlift one-rep maxes adjusted for bodyweight, sex, age and height. None of those 720 reps enters that formula. A year of this routine can leave the score untouched, while two focused Big 3 sessions a week will move it. To find out which side your routine falls on, put your current maxes into the calculator and retest in three months. A flat number means the routine is not aimed at strength.
Frequently asked questions
Can sets of 50 reps build muscle?
Yes. Sets taken close to failure at light loads have repeatedly produced hypertrophy comparable to heavy sets. The same stimulus does not carry over to maximal strength.
What is a 50-35-21-14 scheme good for?
Hypertrophy, muscular endurance, and accumulating volume at low joint stress. At 120 reps per exercise it burns calories and maintains muscle well, but raising a one-rep max needs separate heavy, low-rep work.
Will this routine alone give me visible abs?
No. Visibility is determined by body fat percentage first and crunch volume second. High-rep training helps with calorie expenditure and muscle retention, but diet is what uncovers the midsection.
How do I run high-rep work alongside the Big 3?
Squat, bench and deadlift in the 3–5 rep range twice a week, with the high-rep work as accessories on other days. If both land on one day, do the heavy lifts first and the ladders afterwards.
Source: Men's Health Fitness