Every Monday and Wednesday at 6:30 p.m. Stax, at 3722 South Tryon Street, hosts the biggest fitness boot camp in Charlotte, and it’s free. The draw, or one of the draws, is that it’s led by Randy Moss, one of the NFL’s greatest receivers, who played for 14 seasons with the Vikings, Raiders, 49ers, Titans and Patriots. Moss owns Randy Moss Performance Academy. Also leading the sessions is Emily “Breeze” Ross-Watson, a CrossFit yoga and mobility expert, and owner of Moga Charlotte. You can register in advance to save time. Childcare is available for $5. Read more about the boot camp in the Charlotte Observer. The free boot camps are sponsored by Mercedes-Benz of South Charlotte.