Been running lots and posting on a running fb group.
Will not break 7 minute mile. My quads get too tired about halfway through at the pace i need to maintain to beat it (8.5mph will hit 7 minute mile). My lungs feel fine. Heart rate recovers. Quads tell me to fuck myself.
10 kb push ups
10 kb squats
10 ab wheel rollouts
9,8,7,6,5,4,3,2,1
You may want to incorporate high rep bodyweight squats or lunges and squat thrusts/burpees. Something like 3-5 sets x100 reps bw squats and 1-3 sets of 100 squat thrusts. That will go a long way to improving the muscular endurance to break 7 min mile.
Try to do each set for time and see if you can improve your 100 rep squat thrusts over a period of time (under e.g. 8 min or whatever).