“lower back problems”… welcome to the club. my sciatic nerve was pinched, and it bothers me everyday. have to determine whether it’s due to a legitimate issue or poor flexibility/weakness.
google legendary abs. easily the best program for aesthetic purposes
Squats and deadlifts
Weighted situps gave me a lot of ab hypertrophy a few years ago. I don’t have the need to get much bigger ab muscles anymore so I don’t train my abs directly anymore either.
EDIT: Decline weighted situps