Sunday's Aerobic Run

Excellent work out. I used the Karhonen HR Zones - not sure if this is right (Z2 156-169 & Z3 169-182)

I found the first few hundred metres tight on the hamstrings but this eased up after they had warmed up. I really struggled to get my HR into Z3 let alone Z4 in the 30s efforts.

During the building main set I concentrated on keeping tall when running and foot strike under the body (I mid/fore foot run). I found Z2 work a good easy LD pace Z3 was uncomfortable to maintain esp at the high end....