Why do intervals hurt my shins so much is this normal? Must be crap running style.
Also I doubt that max HR ie 220-40=180 is quite right for me.
Measured three times in intervals today
180, 176, 172. First one = 100% surely not?
I have measured up to 196 cycling at velodrome when I felt dizzy - wisely never repeated.
PS I use carotid pulse over 15 secs so no HRM errors. Have learned this in first aid and think it's accurate.