How Exercise Can Save Your Life

by | Sep 2020

A woman lifts weights.


Fight illnesses like COVID-19 through exercise.

As we continue to face off against COVID-19, let’s focus on fortifying your body for battle by boosting your immune system. For the next three issues, we’ll explore how exercise, nutrition and managing stress combine to fight sickness.

Exercise and Immune Response

Studies show that regular exercise improves immune function. When you challenge your body through exercise, dramatic changes for the good take place. This is especially true with resistance training, or “lifting weights,” because your body responds in an unrivaled way by producing immune-specific proteins that make you far more capable of fighting off disease.

Every time you work out hard enough to break a good sweat you are improving your current state of health. This is a factor that gets little attention but prepares you for battle in the event you are invaded by COVID-19 or another attacker.

Exercising five days a week has been shown to reduce the risk of getting an upper respiratory infection by about 50 percent. And makes symptoms about 40 percent less severe. So regular exercise greatly cuts the odds of getting an infection in the first place, and helps you avoid having a tough time if you do get sick.

Consistency of exercise is critical, because only over time does your body adapt when challenged again and again. It’s known as a “summation effect,” causing immune cells to reprogram as they “learn” to generate additional viability to handle the demands of exercise.

How it Works

Regular exercise has been shown to …

  • Increase number and health of T-cells, a huge deal in fighting viruses such as COVID-19.
  • Improve and speed up circulation of all key immune cells.
  • Bring on an anti-inflammatory response and antioxidant state. (Research suggests this is enhanced as body fat percentage is reduced, but exercise-induced reduction of inflammation is documented regardless of BMI.)
  • Enhance effectiveness of vaccinations (older adults, especially, show greater antibody production after “getting a shot” if they exercise regularly).
  • Lower levels of stress hormones, such as adrenaline and cortisol, which naturally boosts the immune system.

Jill Strand and Chris Radke are owners and certified trainers at UpLift Guided Fitness in Woodbury. 651.209.6778


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