I am currently doing a standard 3xweek, full-body weight-lifting routine, doing all the major compound exercises (squat, DL, bench, row, and overhead) for 3-4 sets a piece, in the 5-10 rep range.
I AM SEEING GAINS IN TERMS OF WHAT I CAN LIFT .... I am however worried that I am not getting enough mobility and endurance. By mobility, I mean that I am not using my muscles in various angles and different movements. By endurance, I mean that I only ever go to 10 reps max.
So I had this idea: rather than do my routine 3 times every week, let me alternate between two workout days A and B.
The A program is like my standard day, i.e. the 5 exercises above, for 3-4 sets each, in 5-10 rep range.
The B program is basically me doing sets in the 10-20 rep range, using a combination of various isolation and compound exercises to target the muscles differently than from day A. For example, for legs I would throw in some bulgarian splits and some calf raises, for chest I would do cable flies, for shoulder I would do raises, for arms I would do skullchrushers and curls, for back I would do pullups, etc. All the exercises would be for low-weight, high reps, targetting mobility + endurance.
So basically I would alternate between the days: A -> B -> A - > B -> A, etc.
Is this a bad/good idea? I'm basically trying to get the "best of both worlds", i.e. combining high-weight compound weight lifting strength with low-weight high-rep athletic mobility and performance-focused lifting.... But I fear I might lose out gains in both areas by mixing them?