The gym chain Planet Fitness charges between $10 and $20 per month and has, on average, 6,500 members per gym. Most of its gyms can hold around 300 people. Planet Fitness can do this because it knows that members won’t show up.
At the age of 41, Jack LaLanne swam from Alcatraz to shore handcuffed. He repeated the feat at 60, this time towing a 1000 pound boat while shackled.
Jim Fixx, the man credited with starting the fitness revolution and demonstrating the health benefits of jogging, died of a heart attack while jogging.
A fitness trainer intentionally gained over 70 pounds to better understand the plight of his overweight clients. Then lost it all again six months later.