Tap a day on the poster to check it off — your progress is saved on this device.

A negative pull-up is the second half of a pull-up done on its own: you get your chin over the bar by any means you like, then lower yourself to a dead hang as slowly as you can. Your muscles can control far more weight on the way down than they can lift on the way up, which is why negatives work. They let you train the pull-up with your full bodyweight before you can pull it, and they are the most reliable route from zero pull-ups to one. The challenge pairs them with dead hangs on alternate days to build the grip and shoulder stability that pull-ups depend on. It needs a bar you can hang your full weight from and something to get your chin above it - a chair, a box, a step or a jump. That is equipment and there is no version of this without it. No floor, no impact, no noise. The difficulty rating is 4 because you are lowering your whole bodyweight from day 1, and slowly.

Odd days are negative pull-ups in three descending sets. The first set starts at 2 reps on day 1 and climbs to 6 by day 25, and the daily total climbs from 4 to 13. No rest is given on the poster, so rest as long as you need between sets - a minute or two is normal for this kind of work. Even days are dead hangs, and they climb in a cycle: the hold time steps up from 10 to 15 to 20 seconds, and each time it does the sets drop back to 3 and rebuild to 4 before the next step. Day 30 breaks the pattern with a single jump to 30 seconds for 3 sets. There are no step-down days. The negatives build the pulling muscles and the hangs build the grip and shoulders that hold you on the bar long enough to use them.

How to do the exercises

Two exercises run through this challenge: negative pull-ups and the dead hang.

• Negative Pull-Ups: grip the bar with your palms facing away and your hands about shoulder-width apart. Get your chin above the bar using a chair, a step or a jump, then take your feet off the support and lower yourself under control until your arms are straight. That is one rep. Aim for a lowering of 3 to 5 seconds - slow enough to feel your back and arms working the whole way, fast enough that you reach the bottom rather than dropping. Keep your shoulders pulled down away from your ears at the top and do not let them slam up at the bottom. Step or climb back to the top for the next rep rather than trying to pull. If you cannot control the lowering at all yet, keep a toe on the chair to take some weight and lower with that assistance until you can do without it. The Pull-Ups Guide covers the full progression from here to full reps.
• Dead Hang: hang from the bar with straight arms, palms facing away, thumbs wrapped round. Pull your shoulder blades down slightly so your shoulders are not jammed against your ears and hang still for the time on the calendar, breathing normally. Let yourself down to the floor rather than dropping. If your grip fails before the time is up, re-grip immediately and make up the seconds. How To Improve Grip Strength explains why this half of the challenge matters as much as the other.

Adjust Difficulty

Make it easier: Keep a foot on the chair for the whole lowering and reduce how much weight it takes as the weeks go on. Shorten the lowering to 2 seconds while you build control, then lengthen it. Rest as long as you need between sets and take 60 seconds between hangs. Use a palms-facing grip on both exercises, which most people find easier. If you have no bar, lie under a sturdy table, grip the edge, pull your chest up to it with your heels on the floor and lower yourself over 3 to 5 seconds - it is a lighter load and not the same exercise, but it is the same movement pattern and it keeps the month going.

Make it harder: Lower over 8 to 10 seconds. Pause halfway down for a 2-count. Hold the top position for 5 seconds before every negative begins. On hang days, use a towel over the bar instead of the bar itself. From the third week, try to pull a single rep at the start of each negative day and add one whenever you can. Doing that on day 30 is the honest measure of what the month built.

What to expect

The first week is hard on your grip and your forearms before it is hard on your back. Expect your hands to be tender the next morning and expect the negatives to feel much faster than you intended on day 1 - slow lowering takes practice and most people drop through the last third. Your lats and biceps will be sore by day 3. Your elbows are the thing to watch. Negatives and hangs both load the tendons on the inside of the elbow, and they adapt more slowly than muscle, so a dull ache there in the second week is your signal to keep the lowering controlled and to rest longer between sets rather than push through. Training Smart: Tendons, Ligaments and Fascia explains why that matters. By week three the lowering has slowed down, the 15-second hangs feel manageable and the top position is somewhere you can pause. Week four is 11 to 13 negatives a day and 20 to 30 second hangs, and by then your back has changed. What you get is real pulling strength, a grip that holds and very often a first full pull-up somewhere in the last ten days. If it does not arrive by day 30 it is close, and the guide above is how to finish the job.