coolhandhutch

I use the same HRM- I'm on about my third Polar in 15 years- and love them. I wear the strap pretty loose, just enough to keep in contact with my chest. I usually don't wear sport bras and I have never had any restriction problems. Try going really loose- where it almost falls off. Do you have the completely elastic strap…

Try strength & interval/circuit training- it helped my times and I also noticed I was less prone to back pain/shin splints. Depending on when and where you get that stitch in your side, it could be breathing related. Try a few really deep inspirations & maximal expirations- blow it alllllllllll out. Works for me when I…