To a greater or lesser degree lots of actresses are fit much like male actors when they are required to for the role. We can talk about the inherent sexism of women to be at peak fitness for roles while men can gain weight for character roles. These are some of the most athletic actresses around who are not afraid of showing a little muscle and moving away from the former ideal of just skinny. At least that's how I think of it.
Gina Carano
Caity Lotz
Ronda Rousey
Kaley Cuoco
Michelle Rodriguez