An efficient but thorough 5 minute warm up/cool down would be great. Yoga has its place but when I’m in a hurry I really don’t have time/get any benefit from breathing exercises or body scanning which is literally half of some of the yoga videos
I got to int level 6 and don’t find it impossible. I feel some time could be saved with shorter recoveries between similar exercises
Can you really achieve any meaningful strength gains in a 15 minute session?
Your warmup for a decent lifting session should be at least 15 minutes in itself - with glute / core activation, skill work and any mobilization and potentiation you need to do. I can rarely get in and out of a gym in less than an hour and a half it I’m actually lifting at capacity.
I don’t know. The SUF strength sessions are really more in the realm of mobility and core work. With only an 1 hour to 1:30 to train on weekdays, shorter with high impact is better.