When I exercise, I usually change into a pair of new tzitzit. Am I required to make a new bracha? After I have finished, I usually put on my original pair. Do I need to make another bracha?
When you put on a new pair of tzizit you are required to make a new bracha.
O:CH 8:12, Chidushey R. Akivah Eiger, Kaf Hachaim 551:55