I was on a super low dose for the last 2 months, and it's hard to tell if it had any effect on my running. Over the last couple months i've still constantly been breaking my own records at the park, I have a route I do that's a little under 3 miles and last week I did it in 25 minutes and 5 seconds!! I just got the go ahead from my doctor to up my HRT doses, so we'll see how it goes. so far I feel like weather is a big variable on how well I do at the park, I do better when it's not super hot out. also, sometimes I feel completely drained and I do awful for some reason, I found that it helps to eat a little before I jog, def don't go on a full stomach but a little snack helps