Size up and not very functional for working out.
"The mesh is so nice and sexy. They run small. I usually wear a medium and they are tight and not very breathable. I felt stiff and could not really move, thinking I was going to rip the mesh. The front V shape is not flattering. I already feel constricted and then it forms a bulge in the crotch. The mesh by the knees is uncomfortable if trying to do table top. I had to put a towel underneath my knees."