He is also the star trainer of the new weight loss reality show Extreme Makeover Weight Loss Edition. Powell works hard to train those that are obese and severely overweight and help them reach their weight loss goals. Powell has created a nutrition lifestyle system called STAX that helps makes his clients’ weight loss easy and convenient. One of the biggest success stories that Chris Powell helped train is David Smith. He managed to lose 401 pounds in just 26 months with Powell’s help and by using the STAX system.