Good day. I am 38 and feel I have gotten very close to my genetic potential naturally. Currently I’m 5'10", 191 lbs, and 8% BF; I cut to 185/187 at 5/6%. Other than possibly the few pounds of muscle I may be able to acquire over the next couple years or more, it seems that my days of tolerable gains may be behind me, but I'm not quite at the muscularity level I desire at this point and feel it may be time to try my first cycle to assess how that improves progress. I wanted to gain naturally for as long as I could stand, and I think I have reached that point. Over the course of my training history, I have used compound exercises for 85-90% of everything I do in the gym. I have heard that while on cycle, one may incorporate more isolated movements into their training and be able to gain just as much if not more muscle while making things safer overall. My question is, does this seem like a routine thing for people on gear to do, add more isolation work, and if so, what would a good estimate of the overall percentage of training done using isolated movements be, or is it really dependent on the individual? My goal is to gain another 10 to 15 lbs then decide from there if I’m satisfied, but at the same time I want to increase my longevity in the sport and not take too many risks that will lead to me not being able to train effectively when I am much older. Thank you in advance for any assistance you can provide.