55 min interval session – 3min hard effort, 90 easy x 3 rounds, then 4min effort x 6, 1 min rest between efforts, finish the session with 3 min hard, 90 sec easy x 3 rounds
55 min interval session – 3min hard effort, 90 easy x 3 rounds, then 4min effort x 6, 1 min rest between efforts, finish the session with 3 min hard, 90 sec easy x 3 rounds