Jaxjacky
T shirt tucked in.
When I wassail and toned I wore Mn S straight legged joggers cotton rich still on sale which dont ride down you legs in handstand, headstand, or shoulder stand, and nor flattering than leggings.
(Never liked leggings, and they are not good if you are prone to thrush)
and honestly at the gym legging wise I think mature ladies might consider view of their backside from behind
Top - when I was slim I wore a close fitting gym short sleeved top or long sleeve lycra mix top. Now I'm with Jax Jacky - tuck in the nice flattering top for all sorts.
But you can also wear a close fitting top with a flared lightweight one on top of it, best of both worlds.