my ironman thriathon watch and heart monitor recorded my heart beat at 229bpm for at least 10 seconds and 20 seconds for 220bpm, i'm 19, is this safe? what happens when you pass your maximum heart rate
my ironman thriathon watch and heart monitor recorded my heart beat at 229bpm for at least 10 seconds and 20 seconds for 220bpm, i'm 19, is this safe? what happens when you pass your maximum heart rate