Lauryn Bosstick, entrepreneur and founder of "The Skinny Confidential," said lifting heavy weights changed her life and transformed her health. Courtesy of P.Volve Lauryn Bosstick said strength training transformed her body and life after years of gym frustration. She struggled to lose weight after her first child, but she started lifting weights and lost weight. Bosstick swears by heavy weights with mobility and stability training for long-term health and fitness. About six years ago, Lauryn Bosstick was trying everything to improve her health, and nothing seemed to work. Bosstick, the founder of "The Skinny Confidential," a wellness and beauty brand, said she gained 60 pounds after having her first child and struggled to lose the weight. "I was so frustrated. I was showing up every day at the gym, and the scale was not moving, and my pants were still tight," she told Business Insider. "I was fed up, and I thought, 'You know what?…