Quick fixes are usually a band-aid, a short-term solution for a long-term problem. The same with crash programs, they usually crash. There is no substitute for time, it takes time to adapt, remember different physical qualities have different times to adaptation. You can’t force adaptation with out paying the consequences. There is no substitute for a well-planned long-term program that is progressive and sequential in nature. Beware of charlatans and false prophets that claim otherwise it take time and a sound training methodology coupled with good coaching.