I was running up until my transfer. The day of transfer I didn't "work out" but didn't limit activity (I traveled for the transfer so walked through airports and carried my bags). Following the transfer I just walked and did less strenuous things to stay active. I actually didn't start running again until about 12 or 13 weeks because MS hit shortly after my positive. I think you'll be fine whatever you decide, but you don't want to second guess what you did if it doesn't work so that's what I'd encourage you to think through. Good luck!