How to Exercise in the Heat: Safe Summer Workouts for Bariatric Patients
Dr. Samantha Stavola-Giaconia DCN, RDN, LD, FAND
Lifestyle
July 7th, 2025

Exercising in the summer can be challenging, especially for bariatric patients who need to balance physical activity with hydration and comfort. While staying active is essential for maintaining weight loss and overall health, it’s crucial to adapt workouts to the hot weather to prevent heat exhaustion, dehydration, and discomfort. This guide provides safe summer workouts for bariatric patients or weight loss surgery patients to stay fit, build lean muscle mass, and lose weight during the summer months, while supporting muscle strength and managing body mass index.

Understanding the Risks of Exercising in the Heat
Before diving into workout recommendations, it’s important to understand the potential dangers of summer exercise:
Dehydration – Excessive sweating can lead to fluid loss, causing dizziness and fatigue.
Heat Exhaustion – Overheating can result in symptoms such as nausea, headaches, and muscle cramps.
Sunburn and Skin Sensitivity – Bariatric patients may have sensitive skin post-surgery, making sun protection essential.
Joint and Muscle Strain – Increased temperatures can lead to faster exhaustion and increased strain on the body
By recognizing these risks, you can take steps to modify your exercise routine for a safer and more effective workout experience.

Best Times to Exercise Outdoors
To reduce the risk of heat-related issues, consider exercising during cooler parts of the day:
Early morning (before 9 AM) – Cooler temperatures and lower humidity levels make for a more comfortable workout.
Late evening (after 6 PM) – The sun is lower in the sky, reducing the intensity of heat exposure.
Shaded areas or breezy locations – Parks with tree coverage or areas near water can offer a cooler environment for exercise.

Ideal Low-Impact Summer Workouts for Bariatric Patients
Low-impact exercises are beneficial for bariatric surgery patients as they help improve strength, endurance, and flexibility without excessive strain on the body. Here are some safe summer workout options to include in your exercise plan:
1. Water-Based Workouts
Water exercises are perfect for staying cool while getting in a full-body workout.
Swimming – Provides cardiovascular benefits while being gentle on joints.
Water aerobics – Engages multiple muscle groups while minimizing impact.
Walking in water – Increases resistance and enhances leg strength.
Aqua yoga – Improves flexibility and relaxation without overheating.
2. Walking in the Shade
Walking is an excellent low-impact exercise for bariatric patients, and doing it in shaded areas can keep body temperature in check.
Choose nature trails, parks, or covered walking paths to avoid direct sunlight.
Carry a hydration pack or water bottle to stay hydrated.
Wear lightweight, breathable clothing and a hat to protect against the sun.
3. Indoor Workouts
On extremely hot days, consider working out indoors where temperatures are controlled.
Treadmill walking – Adjust speed and incline for a personalized workout.
Strength training – Use resistance bands or light free weights to improve muscle tone and build muscle strength.
Chair exercises – Ideal for low-impact movement and muscle activation.
Yoga or Pilates – Enhances flexibility and balance while promoting relaxation and supporting mental health.
4. Cycling (Early Morning or Late Evening)
Cycling is a great cardiovascular activity that’s easy on the joints. Choose:
Stationary biking indoors if outdoor heat is excessive.
Evening or morning outdoor cycling with proper sun protection.
Electric or assisted bikes for gradual endurance building.
5. Stretching and Flexibility Exercises
Stretching helps maintain mobility and prevents stiffness.
Perform morning or evening stretching routines.
Incorporate gentle yoga poses to enhance flexibility.
Try foam rolling to relieve muscle tension.

Essential Summer Exercise Routine Safety Tips
1. Stay Hydrated
Bariatric patients are at higher risk for dehydration, so it’s vital to:
Drink at least 64 ounces of water daily (or as recommended by your doctor).
Carry an electrolyte-replenishing drink if sweating excessively, and approved by your doctor.
Avoid caffeinated and sugary drinks, which can contribute to dehydration.
2. Dress for the Weather
Wear:
Lightweight, moisture-wicking clothing to keep cool.
A wide-brimmed hat and sunglasses for sun protection.
Supportive footwear to prevent joint strain and discomfort.
3. Listen to Your Body
Stop exercising immediately if you feel dizzy, nauseous, excessively tired, or lightheaded.
Rest in a cool, shaded area and hydrate.
Consult your doctor if persistent symptoms occur post-exercise.
4. Use Sunscreen and Skin Protection
Apply broad-spectrum sunscreen (SPF 30 or higher) before heading outdoors.
Wear UV-protective clothing if spending extended time outside.
Reapply sunscreen every two hours if sweating or swimming.
5. Modify Your Intensity
Reduce workout intensity during high temperatures.
Take frequent breaks and practice interval training instead of continuous exertion.
- Use cooling towels or fans to regulate body temperature.

Creating a Summer Workout Plan
A structured workout routine can help you stay consistent with exercise after bariatric surgery while prioritizing safety. Here’s a sample week of summer-friendly exercises:
Monday: 30-minute morning walk + 10 minutes stretching
Tuesday: Water aerobics or swimming (30-45 minutes)
Wednesday: Indoor strength training (20 minutes) + yoga (10 minutes)
Thursday: Evening cycling (30 minutes)
Friday: Rest day or light exercise like stretching
Saturday: Treadmill walking or an indoor workout (30 minutes)
Sunday: Outdoor walk in the shade + foam rolling session
Exercising in the summer as a bariatric patient requires careful planning, hydration, and adjustments to stay safe and comfortable. Whether it’s water workouts, shaded walking, or indoor strength training, there are many ways to stay active without overheating. By listening to your body, staying hydrated, and modifying intensity, you can continue progressing in your fitness journey while enjoying the summer season. Exercise regularly to support a healthy lifestyle, preserve lean muscle mass, and maintain a healthy body weight. Pairing physical activity with a healthy diet can further support long-term success, but also make sure to prioritize safety, have fun, and embrace the benefits of staying active in a way that suits your body’s needs!