Skip Nav
How to Do the Leg Surrender Exercise
Bodyweight Exercises
The Lower-Body Exercise to Lift Your Butt and Tone Your Thighs
Books
17 Heart-Wrenching Memoirs About Addiction
Popsugar Interviews
A Dietitian Explains the Macro Breakdowns You Should Follow to Lose Weight and Build Muscle
Can Sparkling Water Cause Weight Gain?
Diet Tips
Could Sparkling Water Wreck Your Weight Loss? We Asked a Dietitian
Workouts
I Trained With J Lo's Trainer, and Now I Know the Secret Behind Her 6-Pack

Best Exercise on the Keto Diet

You Can Still Exercise If You've Got the Keto Flu — but Avoid These Workouts

Photographer: Kathryna HancockRestrictions: Editorial and internal use only. No advertising, no print

The ketogenic diet has amassed an insane amount of popularity, thanks to the many weight-loss stories and celebrity endorsements. If the low-carb, high-fat diet is up your alley, beware that there is a period known as keto flu, and the symptoms are undesirable. As your body begins to adapt to using ketones as its main energy source instead of glucose, you may experience brain frog, headaches, lack of energy, and poor sleep. Thankfully, the keto flu isn't permanent, and while you're experiencing these lackluster symptoms, it's best to scale back the intensity of your workouts until your body completely adjusts to functioning on the keto diet.

Carbohydrates, Energy, and Ketosis

As a refresher, carbohydrates are one of the three macronutrients in the body (fat and protein are the other two) and act as our body's main source of energy. Carbs fuel our brain, heart, muscles — essentially everything we do. On the keto diet, five to 10 percent of your daily caloric intake comes from carbohydrates versus the recommended 45 to 65 percent on less-restrictive diets. While you may initially experience fatigue throughout the days and during workouts, you'll soon see a boost in your energy levels as your body enters a state of ketosis (your metabolism will be running on fats instead of carbs).

Workouts to Do

During the first few weeks of the keto diet, you may experience lower energy levels than normal. Break a sweat with the following low-intensity workouts.

ADVERTISEMENT
  • Yoga
  • Cycling
  • Walking
  • StairMaster
  • Workouts to Avoid

    A recent study found that the keto diet reduces anaerobic performance (high-intensity workouts), and while this may not be the case for everyone, we recommend cutting back on the intensity until your energy levels increase.

  • High-intensity interval training
  • CrossFit
  • Sprinting
  • Rowing
  • Heavy weightlifting
  • Jumping rope
  • Once you've overcome the keto flu, slowly begin to incorporate more high-intensity workouts into your routine. As always, consult your physician before making any drastic changes to your diet.

    Image Source: POPSUGAR Photography / Kathryna Hancock
    From Our Partners
    Can Sparkling Water Cause Weight Gain?
    How to Lose Fat Using Hunger Scale
    Simple Plan to Lose Weight
    Worst Foods For Belly Fat
    50-Pound Weight Loss Transformations
    How Do I Know If I'm in a Calorie Deficit?
    Salad For Weight  Loss
    Low-Carb Vegan Protein Sources
    How to Treat Keto Rash
    Coach's Tips For How Not to Overeat
    Keto Pumpkin Recipes
    Keto Fat Bomb Ideas
    From Our Partners
    Latest Fitness
    All the Latest From Ryan Reynolds