My only request for consideration is that if a scene involves sport (football, rugby, wrestling, swimming, cycling...you get the idea), then please use authentic gear- UnderArmour, Bike, McDavid, Shock Doctor, Louis Garneau, Pearl Izumi, Speedo, adidas, Puma, for starters. How many football players wear Calvin Klein, 2xIST, Cellblock jocks? And use the gear in appropriate context. As a cyclist, I can tell you I would not wear a thong under my cycling kit. I personally find the gear designed for actual sporting events MUCH hotter than the designer stuff (and most of the time, costs less).
And yes, the gear needs to stay on the performers longer. Eventually, it may need to come off. Perhaps a swapping of gear mid-scene after some nude sequences.
Thank you for allowing me to share my opinion. Now...back to my bulge! lol