Is it really necessary to taper before a big event, or is it just an excuse for people to slack off and lose their edge, and if so why do so many coaches and experienced athletes swear by it, and whats the minimum amount of time you can taper for while still seeing significant benefits, and is it really worth the risk of losing fitness and momentum, especially for athletes who are used to pushing themselves to the limit on a regular basis, and what are the actual physiological benefits of tapering, and how do they outweigh the potential drawbacks of reduced training intensity and volume?