Underwater exercises in cold water with weights result in no lactic acid buildup and reduced perceived weight.

“you're in cold water it's not freezing cold but it's still cold enough to change things there's no lactic acid buildup at all your whole body's under tremendous pressure because you're deep underwater so how deep was this pool it's like 14 feet oh wow so you feel very safe lifting weights that would feel scarier to lift on land because you there was so much support from the water and also Archimedes principle I mean you're technically moving less relative weight because the water is lifting part of it”