Hey man sometimes it can be heat related. But also try drinking a lot of water, you may be dehydrated and working out is only making you more dehydrated. One more thing if you dirnk protein after...
So I have had hives for the past 6 weeks and they were driving me crazy. I found out a lot of things about hives over the past 6 weeks and went through phases of changing laundry detergent, checking...