I (35f) have a question about exercising when dealing with anxiety. Due to relationship issues I’ve developed this constant anxiety that I wake up with in the morning and doesn’t go away until I go back to sleep. It’s like my body is always on alert and nervous and I’m not sure how to deal with it. 
I’ve been told that exercise helps and I used to very athletic so I do like working out. This generally involves running, biking or doing yoga. The problem I have however, is after every session I feel completely drained, pure physical exhaustion from an exercise that isn’t supposed to make me feel that way. I try refuelling after, eating well before but once the exhaustion kicks in I can’t get rid of it. I’m thinking it’s because of the constant anxiety and I was wondering if anyone else experiences this? Any advice on how to feel better? Thanks!!