Hi! I've been doing the drop set (15-12-10-8-5) PPL for quite a while now. I noticed that my lower back is kind of neglected because the exercises I only do for Pull are pullups, inverted rows. What exercises would help me strengthen my lower back?

Hi! I've been doing Pull Push Legs this past month hypertrophy wise but I haven't worked abs yet. Would it be better if I just include abs on the PPL or do I work on calisthenic skills? If so, what exercises would best fit and how many reps sets?

Hi! I've been working out for a while using what I currently have at home (doorway pullup bar, dip bars, pair of dumbbells, ab roller). I made some newbie progress with both pullups and dips. (8 reps pullups, 20 dips) I am planning to do the 5 sets till failure but my concern is how will I be able to utilize my other equipments (db's, ab roller) if I would do both Pull Push in a day.Legs would be day after or after rest day but my question would be When should I use the extra equipments(db, ar), what day and what exercises? Goal is muscle mass, and 100 reps for pullups and dips.