Good Morning,
I'm currently following GB foundation strictly, but with 6 days on. M/W/F being the Upper Body portion and T/W/S being the Lower Body Portion. It's working out great. I am thinking of adding additional reps(until technical failure) for the last set of the last day(s) per exercise. This is for slightly greater hypertrophy(flush the muscles with new blood and fresh nutrients), endurance, and increased stimulus for an increased adaptive response(make next weeks lower reps slightly easier). I'm not looking to progress faster, just mainly gain extra muscle and increase stamina. The "death" sets are not for mobility exercises and not on deload weeks. I understand that GB Foundation is already very rock solid and does not need "tweaking'. However, would adding extra repetitions is such a way actually harm (my) overall progress; if not aid it?
Any thoughts? Discussion is open for debate, criticism is very welcome.