Why We Need More Than Just Steps: The Importance of Muscle-Strengthening Activities

While getting your steps in is important, it’s equally crucial to incorporate strength training into your routine.

The federal Physical Activity Guidelines for Americans and the World Health Organization recommend at least two sessions per week of muscle-strengthening activities. These should involve weight-bearing exercises of moderate or greater intensity, targeting all major muscle groups. This is in addition to 150 to 300 minutes of moderate to vigorous aerobic activity. However, three-quarters of Americans fail to meet both aerobic and strength targets, with strength training being especially neglected.

Exercise, in any form, is a physical stressor that prompts the body to adapt and become stronger. Resistance training, like aerobic exercise, raises heart rate and boosts lung function, but its primary benefit lies in challenging the muscles. When you push or pull against resistance, microscopic tears form in the muscle tissue. These tiny tears aren’t harmful—they actually trigger the muscle to repair itself and grow stronger. As Jessica Gorzelitz, an epidemiologist and exercise scientist at the University of Iowa, puts it, “You’re trying to hurt yourself for an adaptive benefit.”

The benefits of muscle-strengthening exercises extend far beyond building muscle. A 2022 analysis found that strength training is associated with a 10 to 17 percent lower risk of all-cause mortality. Gorzelitz’s research also showed that older adults who combined aerobic and resistance training had the lowest mortality risk. Even weightlifting alone significantly reduced the risk of death from all causes, including cardiovascular disease.

Strength training isn’t just about living longer—it’s about living better. We lose 3 to 8 percent of our muscle mass every decade after age 30, with the rate increasing after 60. Strength training helps counteract this loss, promoting metabolic health and maintaining the ability to perform daily tasks like lifting suitcases and carrying groceries. It also strengthens bones by increasing bone mineral density, which is especially crucial for aging women.

For cancer survivors, strength training has been shown to reduce cancer-related fatigue and improve quality of life. It also helps prevent and manage diabetes by improving blood glucose storage and circulation. Additionally, strength training has been linked to reductions in anxiety and depression.

Despite its benefits, many people shy away from resistance training because it’s more complex than aerobic exercise. Unlike walking or running, which are straightforward and easy to track, strength training involves multiple variables. You need to decide which muscles to work, in what order, what equipment to use, and how intense the workout should be. It’s also important to allow for adequate rest between sessions to give your muscles time to repair and grow stronger.

Incorporating strength training into your routine may take some planning, but the health benefits are well worth the effort. It’s not just about getting your steps in—it’s about getting stronger, healthier, and more resilient for the long haul.

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