Mystery #4Tier 3muscles and recovery
Why are your muscles most sore the day AFTER a tough workout, not during it?
You survive a really tough workout feeling proud and fine. Then you wake up the next morning and, ouch, everything is stiff and sore. Strangely, the ache is often worse a whole day later, not while you were exercising. Why does the soreness wait until after you've rested?
Your guess
What do you think your muscles are doing in the hours after a hard workout?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.