Cardiovascular Health Outcomes

Running and cycling directly strengthen the heart muscle and lower resting blood pressure by 5-10 mmHg, but a 2019 study in *Medicine & Science in Sports & Exercise* found that even one hour of weekly resistance training cuts cardiovascular disease risk by 40-70%, independent of aerobic exercise. The American Heart Association now endorses both modalities equally, signaling a paradigm shift. Grip strength—a proxy for muscle mass—predicts heart failure better than body weight, making weights a non-negotiable companion to sweaty runs.