"Cooling down is even important after a strength workout. After lifting, try doing some dynamic stretches such as walking lunges or yoga poses." - http://www.mensfitness.com/training/build-muscle/5-ways-to-cool-down-after-a-workout

вообще-то это растяжка, но...

"This frequently neglected part of your workout is critical for promoting recovery and decreasing muscle stiffness. Perform these exercises right after your workout when your muscles are at their warmest and most limber." - http://uk.askmen.com/sports/bodybuilding_100/143_fitness_tip.html

"В качестве заминки можно использовать небыстрый бег, который постепенно переходит в ходьбу, а также растяжения." - http://sportwiki.to/Заминка_в_бодибилдинге