If you're new to lifting weights and do bicep curls with heavy weights, then wrap your arm tightly after exercising, you might end up with slightly less muscle growth in your upper arm compared to not wrapping it at all.

After doing heavy weight training, if women who’ve never trained before use a tight band around their arm afterward, their arm muscles don’t get any thicker—but men’s muscles still grow normally.

If you're new to lifting weights, adding blood flow restriction after your workout won't make your muscles grow any more than just lifting weights by itself—even if you do the same amount of work.

When people do exercise with bands that squeeze their muscles afterward, some people’s muscles grow a lot, others barely grow at all—even though on average, the whole group doesn’t show much change. It’s like everyone reacts differently to the same workout trick.

When you do blood flow restriction training—like wearing tight bands on your arms or legs while lifting light weights—you build muscle mainly because your muscles fire harder and earlier, not because of the burn or buildup of waste products.

If you can't lift heavy weights because of an injury or illness, doing light weight exercises while squeezing your limbs tight might still help you get stronger — and that could be a good option for people in rehab.