Fiona...Tough but manageable.. perfect way to describe VO2 sessions, once they become unmanageable we are going too fast and wont handle subsequent sessions, that why I stayed away from club track session this week it always get so competitive and as hard as I try to do my own thing we always end up sprinting the last 200 with lungs burning and tasting blood then I feel sh** the next day.
Treadmills have there place and are grreat f there is no alternative and done on .5-1 % incline makes up for lack of wind resistance, and as JF50 says just use the old heart rate monitor to judge effort if in doubt..but I do find it boring and miles see to take for ever to tick away
HeOw yes get out and do the 20..anything is better than a 5 am start..glad you were well enough to do the 12, you were obvioulsy just overtired from racing .
Rest day for me, no choice really, picked the youngest grandson up at 8 and got him till 6.30 then off to work..no one else and I mean no one else except him is allowed to stop me running..