08/27/2025
“As a surgeon and obesity medicine specialist, I work with patients to safely increase activity—no matter their starting point,” says John Harvey, MD, Comprehensive Weight Management Program, Mount Sinai Morningside. “So, before you start any new exercise program, check with your physician. Also, ask if your medications can increase heat sensitivity.”
“If you have asthma, heart disease, or diabetes, summer exercise can be safe and beneficial. But you need to know when and how to adapt,” adds Dr. Harvey.
Asthma: Warm, humid air can be a trigger. Always carry a rescue inhaler and exercise early or indoors.
Heart disease: Avoid peak heat hours; notify your doctor if you feel dizzy, overly fatigued, or short of breath.
Diabetes: Heat affects blood sugar and insulin absorption. Monitor levels closely and stay hydrated.
Consider exercises less prone to overheating—like swimming or water aerobics—to stay cool while getting a full-body workout.
When starting an exercise program, begin slowly and gradually increasing duration and intensity to avoid injury or over-exertion. Pay attention to how you’re feeling during activity. If you feel uncomfortable, dizzy, or unwell—stop, rest, and seek help if needed.
Already a Mount Sinai patient? Send your physician a MyMountSinai message and ask any questions before heading outdoors.
