When Rachel was just 24 years old, she received a scary prognosis. "My doctor told me that if I [maintained] the lifestyle I was living, I would end up in a wheelchair with an oxygen tank by the time I turned 40," she recalled. "I probably would have died." Eighteen months ago, Rachel weighed nearly 500 pounds and couldn't walk a block without being short of breath. Rachel's transformation began after she made subtle changes to her lifestyle. "