Is training to failure an effective & efficient way for us natty over 35's? I'm still a noob (almost 3mo in gym), & like to push myself to get all the work my body will give. I'm reading articles (C. Thib) that say maybe I should back off that level of intensity due to excess cortisol release. I like to workout 2or3 days on & 1day off. I've had to take 2days a few times, but generally I feel great after just 1 day off. I sleep plenty, walk & stretch daily & eat pretty well.
I've been on a push/pull/legs split, doing from ~10-15+ work sets per workout - more on upper body days as the weights are lighter & I have more exercises (3-5 exercises for upper days & 2-3 for lower body). Movements are almost all compound lifts. Calves & Abs worked in a few times a week.
Upper body stuff:
Bench, incline, decline sometimes with DB's, dip machine, Overhead presses, push-ups pullups, rows
Squats, deads, ham raises, sometimes RDLs &/or hack squat machine (only one squat rack in gym)
I've been feeling good doing this so far, joints wanted a break this week, but I'm still very motivated & mind/muscles feel strong. So far no regression on my weights, each workout seems to be more weight or more reps or both.
Am I missing out on potential gains working out like this, or should I continue to listen to my mind/body & go hard when I can?