Max hangs are short hangboard hangs, usually around ten seconds, at a load close to the most you could hold, with about three minutes’ rest between them. They train finger strength rather than endurance, and they’re one of the most efficient ways to do it. They’re also the most demanding thing you can do to your fingers on a board, so they come after a year or more of climbing and a few months of easier hangboard work, not before.
This post covers what a max hang actually is, why finger strength is worth the effort, who should be doing them, and a block you can run.
What makes a hang a “max hang”
Three things separate a max hang from just hanging on a board:
- It’s short. Around 10 seconds. Long enough to load the fingers properly, short enough that you never get pumped.
- It’s heavy, but not to failure. The load is set so you could hold on a few seconds longer than you do. You stop with something left.
- The rest is long. Two to three minutes between hangs, so every rep is done on fresh fingers.
The best-documented version comes from climber and researcher Eva López-Rivera. In her 2019 study with Juan José González-Badillo, the max-hang group did 10-second hangs in a half crimp, loaded so that they could have held on for about 13 seconds, leaving a three-second margin before failure. They rested three minutes between hangs and built from three hangs to five over each four-week phase, twice a week. In the first four weeks they added weight on an 18 mm edge; in the second four they hung bodyweight on the smallest edge they could manage.
Note who did it: 26 sport climbers averaging around 7c+/8a, with at least two years’ climbing and, on average, over ten. That’s the population the protocol was designed for.
Why the margin matters
The margin is what makes max hangs sustainable. Going to failure on a board means the last second is spent with your grip opening and the load shifting about on your fingers, which is the moment you least want. Stopping with a few seconds in reserve keeps every rep in good form. A margin of roughly three seconds is the version that’s been studied; treat it as the rule, not a suggestion.
Why finger strength is worth training
In a 2025 study of 307 climbers, Berta, Baláš and colleagues tested maximal finger strength alongside several endurance tests, and finger strength was the main predictor of climbing ability, for women and men alike, with intermittent endurance some way behind. Once the scores were scaled to body mass, women and men didn’t differ significantly.
That’s a correlation, not a promise. Strong fingers don’t place feet or read sequences, and plenty of climbers are held back by those first. But once movement stops being your main limit, how hard you can pull on a small edge tends to decide what you can hold, and max hangs train exactly that.
Max hangs are also cheap on time. A session is a handful of 10-second hangs, which leaves you plenty to give to climbing afterwards.
Who should do max hangs (and who shouldn’t)
Max hangs aren’t a first hangboard protocol. The tendons and pulleys in your fingers adapt much more slowly than the forearm muscles that load them, and a heavy, isolated hang is very good at finding the gap between the two.
You’re ready to try them if all of these are true:
| Check | Why |
|---|---|
| You’ve passed the hangboard readiness checklist | Over a year of regular climbing, healthy fingers, a plateau that points at fingers |
| You’ve done at least a few months of easier board work with no trouble | Your fingers need to know isolated loading before they get near-maximal loading |
| Your fingers are pain-free, and have had no injury in the last six months | Heavy hangs make irritated tissue worse, not stronger |
| You’re an adult | Under-18s shouldn’t add weight to hangs at all |
| You can fit two sessions a week, fresh, at the start of a session | Tired or rushed max hangs are where things go wrong |
If you fail one, that’s your next job. Not ready for a board at all? Build finger strength on the wall instead; the same principle of short, hard, rested efforts applies there with your feet taking some of the load.
A six-week max-hang block
This is a conservative entry block, lighter than the research protocol. Run it twice a week, with at least two days between sessions, at the start of the session before any hard climbing.
Warm-up (every session)
- Ten to fifteen minutes of easy climbing or general movement.
- Four or five hangs on your training edge, starting with your feet on the floor and building to roughly your working load, with a minute’s rest between them.
Setting your load
Use an edge of around 18–20 mm and a half crimp (middle finger joints bent to roughly a right angle, thumb off the edge). Find the load you can hold for about 13 seconds, by adding a little weight or taking some off with a pulley, then take a little more off. Your working load is the one where a 10-second hang ends with you sure you had at least three seconds left. If you’re not sure, it’s too heavy.
The block
| Week | Hangs | Hang / rest | Load |
|---|---|---|---|
| 1 | 3 | 10 s / 3 min | Working load |
| 2 | 4 | 10 s / 3 min | Same |
| 3 | 5 | 10 s / 3 min | Same |
| 4 | 3 | 10 s / 3 min | Increase by the smallest step you have, if week 3 felt clearly easy |
| 5 | 4 | 10 s / 3 min | Week 4 load |
| 6 | 2 | 10 s / 3 min | Week 1 load: an easy week before you retest |
Then climb as usual, a little shorter than normal. Don’t stack max hangs on top of a limit-bouldering day or a campus session; the fingers get the same kind of load from all three.
Progressing
Only add load when the three-second margin is still clearly there on the last hang of a session. Add the smallest amount you can (a kilogram or so, or a notch less help from the pulley), and never more than once in a few weeks. Finger strength comes slowly, and a load that’s a little too heavy turns a strength hang into a test.
Common mistakes
- Going to failure. It feels more productive and isn’t. Stop with reserve.
- Shortening the rest. The later hangs end up on tired fingers and form slips. Time the three minutes.
- Full crimping. Keep the thumb off the edge. The half crimp is what the research used, and it’s described there as safer than the full crimp.
- Chasing small edges and big weights at once. Change one thing at a time: either the load, or the edge.
- Doing them tired. Max hangs after a hard session are a different, riskier exercise. If you missed the start of the session, skip them.
When to stop
Stop the session and see a physiotherapist or doctor if you feel a pop or a sudden sharp pain in a finger, see swelling, or have finger pain that’s still there the next morning or keeps coming back. Don’t train through it and don’t try to work out what’s wrong yourself.
How to know it’s working
Measure the same thing before and after: the heaviest load you can hold for 10 seconds on your edge with a clear margin, or as a share of your body weight (body weight plus added weight, divided by body weight). Test fresh, after the same warm-up, on the same edge, at the start of a session. A single six-week block might move it a little or not visibly at all; fingers change over months, so judge the trend across several blocks. How to run a retest you can trust covers keeping the conditions identical so the number means something.
Then check the wall. If your hang number climbs but you’re still falling off the same problems, finger strength probably wasn’t your limit. The three gaps that cap intermediate climbers is a good place to look next.
If you’d rather have the load, block length and retests planned for you, Mantle builds your training week by week from what you log, and keeps finger work matched to your climbing history.