How do I cool down and does it matter?

The cool-down is one of the most confidently recommended and least evidenced parts of an exercise routine. It is worth doing, but for different reasons from the ones usually given.

Safety

Step by step

1. Know what the evidence does not support.Cooling down has repeatedly failed to show a meaningful reduction in delayed-onset muscle soreness or in injury risk. If you skip it, neither of those is the consequence.
2. Know where it does help.Returning gradually to rest after hard sustained effort. Stopping abruptly lets blood pool in the legs, which can cause lightheadedness, and this is a real effect rather than a theoretical one.
3. Scale it to what you did.After a walk or a light session, nothing is needed. After a hard run, a long ride or heavy training, a few minutes of gradually reducing effort is worthwhile.
4. Reduce the intensity gradually.Three to five minutes of the same activity at an easy pace — jogging to walking, cycling with no resistance. Breathing and heart rate come down steadily rather than suddenly.
5. Keep moving rather than sitting down.Walking about is the main thing. Sitting or lying down straight after hard effort is what causes the dizziness people occasionally get.
6. Use it for mobility work.The genuinely useful application. Muscles are warm, so it is a good time for static stretching or mobility work — which improves range over time, whatever it does or does not do for soreness.
7. Do static stretching after, not before.Prolonged static stretching before activity temporarily reduces force output. After is the appropriate time for it, and it is one reason to have a cool-down at all.
8. Take the chance to check in.A few minutes noticing what felt tight, sore or different. Small problems are more noticeable now than they will be tomorrow.
9. Drink and eat sensibly.Rehydrate, and eat within a reasonable window after a demanding session. This does more for recovery than the cool-down itself.
10. Get out of wet kit.Particularly in cold weather. Body temperature drops fast once you stop and damp clothing accelerates it considerably.
11. Do not feel obliged to stretch everything.Two or three areas that felt tight, held thirty seconds each. A full routine is not necessary and its absence is not why you are sore.
12. Remember what actually reduces soreness.Building up gradually, sleep, adequate food and time. Soreness after unfamiliar exercise is normal and there is no cool-down that prevents it.

Tips

• Five minutes of easy movement plus a couple of stretches for whatever felt tight. That is a complete cool-down for almost any session.
• Do not sit straight down after hard sustained effort. Walk about for a few minutes instead.
• Save static stretching for afterwards. Before activity it temporarily reduces force output.

Common mistakes

• Expecting a cool-down to prevent soreness — The evidence does not support it. Delayed-onset soreness after unfamiliar exercise is normal and is reduced by building up gradually, not by stretching afterwards.
• Stopping dead after hard sustained effort — Blood pools in the legs and can cause lightheadedness. A few minutes of easy movement avoids it, and this is the part that genuinely matters.

If it doesn't work

Questions people ask