DOMS peaks 24-48 hours after a workout and comes mostly from the eccentric phase, when your muscle lengthens under load. Slow down the lowering part of each lift to cut soreness and build more strength.
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What I want to talk about is DOMS, you might've heard, which is delayed onset muscle soreness. And that's something that usually comes within 24 or 48 hours after a workout. Now it's known that DOMS is usually most related toward that eccentric or elongation part of the exercise. When we're doing that, what's happening is that's really the time where we're really building a lot of strength. So if you're doing that bicep curl and you pull it up and you let your arm drop down, I would recommend you make some changes. You always want to control the weight going down, whatever the exercise that you're doing. You're going to notice a lot more later on and tomorrow, and you're going to get so many more results and better results from doing it in that way.