These days it isn’t enough to buy a gym membership. Ergogenic aids such as caffeine, creatine, nitrates and sodium bicarbonates are usually used by professional sportspersons and athletes while the general population, much like Beria, mainly concerns itself with protein and caffeine supplements, says Sandhya Pandey, chief clinical nutritionist at the Fortis Memorial Research Institute, Gurugram. For those with pre-existing …