In this week's Training Sessions is a mash-up of intervals with a 12-minute test and is a gift from Dunc:Warm up as usual then start the intervals as follows:3min easy, 1min hard, recovery for 1 min (slow jog or walking is fine)2min easy, 2min hard, recovery for 1min1min easy, 3min hard, recovery for 1min4min time...
