Since fewer than two in 10 Americans get the recommended levels of exercise, and more than 25% of U.S. adults do not devote any time to physical activity, there was likely a sudden rush of new members and former recommitted clients at your gym at this new year. Many of these new gym-goers are probably also leaping into levels of exercise intensity that may have a negative impact on adherence. Learn how to ensure you'll be training new and recommitted clients through Valentine's Day.