lol what? Vitaliy recommends watching movies during Z2 stairmaster sessions (2-4 hours long). No athlete/trainer says they have to be boring. If you have access

lol what? Vitaliy recommends watching movies during Z2 stairmaster sessions (2-4 hours long). No athlete/trainer says they have to be boring. If you have access to mountains, doing a long Z2 hike in a beautiful area is totally beneficial.