It’s hard to believe
"I wore my shirt the other day for a 2 mile run. I really find it remarkable that something that only adds one and a half pounds could make such a difference. A ran intervals as I normally do one day a week. The weather was the same, but I had to rest soon sooner before I can begin my second set. This was the first time that my outer shorts were dressed in perspiration when I got back to my truck. I’m sure that will contribute to me in a positive way. I’m now considering ordering a vest."