One in Three Lifters Starts With Something Already Hurting

RebelUp Coaching Team August 27, 2026 6min

Short answer

Of 259 RebelUp users, 91 reported a problem area before their first workout. Lower back led the list. The fix is swapping the exercise, not skipping the muscle.

Most training advice assumes you arrive healthy. Pick a program, add weight, show up. The step before that gets skipped: something already hurts.

35% arrive with a problem area

Here is what RebelUp users reported when they set up their training profile.

RebelUp user data

Users who completed a training profile259

Reported a problem area91

Share35%

Most common areaLower back, 30 users

Lower back 30, ankle 28, wrist 26, shoulder 24, knee 23. One in three people starting a program is already working around something. Mostly not a diagnosed injury — the usual version is "it catches when I load it that way."

Swap the exercise, don't skip the muscle

Most people pick one of two bad options.

Push through it — the pain grows and eventually costs weeks off entirely
Cut the whole body part — drop everything for a cranky lower back and there is not much program left

There is a third option. Train the same muscle through a different joint angle. If back squats bother your lower back, leg press and hack squat hit the same quadriceps with a completely different spinal load.

Lower back complains → leg press instead of barbell squat

Wrist complains → dumbbell hammer curl instead of barbell curl

Shoulder complains → dumbbell floor press instead of barbell bench

This means finding an angle you can load without pain — not gritting through a movement that hurts. Pain lasting more than three weeks, or anything with numbness or tingling, is a doctor's job before it is a programming job.

The swaps are predictable by area

Lower back — move off axial loading (back squat, deadlift, good morning) toward machines. A back pad is the marker
Wrist — move from a fixed pronated grip (straight bar) to neutral (dumbbell, EZ bar, rope)
Shoulder — avoid angles that drive the arm behind the torso (bottom of a barbell bench, behind-the-neck press) and keep range in front of the body
Knee — move from knee-dominant work (lunges, sissy squat) toward hip-dominant (hip hinge, leg curl)
Ankle — the problem is the heel lifting. Use a heeled lifting shoe, or move standing work to a seated version

Recording it once beats deciding every session

This is why RebelUp carries over 32,000 exercise alternatives — every movement has substitutes that train the same muscle through a different angle.

Log your problem areas once at setup and those angles drop out of every routine automatically. You stop re-making the same judgment call every session.

Frequently asked

Shouldn't I just rest if it hurts?

For an acute injury, yes. But most of those 91 reports are not acute — they are chronic catches at a specific angle. Resting completely there lets the surrounding musculature weaken, and it hurts more when you return.

Are substitutes less effective?

If the substitute targets the same muscle, the stimulus is comparable. What changes is the direction of load on the joint. Eight uninterrupted weeks always beats three weeks off.

How do I tell pain from normal soreness?

Soreness shows up the next day, sits in the belly of the muscle, and fades in a few days. Anything sharp, anything in a joint, or anything that arrives mid-set is pain. That is the signal to swap.