vegpedlr
Level 6 Valued Member
I ruck with 35# up a hill and back down for about 45 min. Going up the HR is definitely aerobic, coming down not so much. But coming down means some eccentric load on the legs, which is good, but without the impact of running. Overall my ruck is a nice aerobic endurance and strength endurance workout. I’ll be sticking with it as bike cross training for the time being.