Why do muscular swimmer's "muscles" move like jelly when they shake their bodies?

Question

Why do muscular swimmer's "muscles" move like jelly when they shake their bodies?

Answer 1

swimmers muscles happen to be in back of and under the arms, shoulders, back of the legs, and calfs... swimmers don't generally get 8 packs from just swimming. weight lifting's a big part of it. i mean don't you have places with muscle that look like fat? I mean i do.

Answer 2

swimmers have lots of muscles. however, since they constantly train in a cold encvironment, their muscles are surrounded by a layer of fat-the body's natural insulation. that's why they jiggle like that.

Answer 3

I dont know why but some really fast swimmers dont have the most ripped bodies. Im only 15, but ive been swimming for 10 years and i have a six pack and a pretty ripped body, dont want to brag, im just saying it is proboly different for everybody.