Boost Performance: Intermittent Fasting & CrossFit Nutrition Guide

Intermittent Fasting and CrossFit – A Nutritional Guide

CrossFit is an intense and highly popular exercise program that has gained tremendous traction over recent years. It is an exercise regimen that combines elements of weight training, gymnastics, cardiovascular conditioning, and powerlifting. CrossFit is renowned for its ability to help people get in shape quickly, but it is important to be aware of the nutrition guidelines associated with the program. The CrossFit nutrition recommendation is to eat meat, vegetables, nuts and seeds, some fruit, little starch, and no sugar while keeping the overall intake of calories lower than those in a typical diet.

Can Intermittent Fasting (IF) and CrossFit Be Combined?

The evidence suggests that you absolutely can mix IF and CrossFit, but your success with it will all depend on what you are currently ready, willing, and able to do. A review article published by John Hopkins University concluded that intermittent fasting could boost physical performance and detailed how men and women can use this type of diet to achieve their exercise goals.

At the same time, it is important to understand that intermittent fasting is not the same as starvation or crash dieting. Intermittent fasting is a form of dietary restriction where you go for a pre-determined period of time without eating anything. This can range from 12-16 hours or even longer depending on the individual. The idea is to give your body a break from constantly digesting food, allowing you to focus on other aspects of your fitness program.

It is important to note that if you are going to combine CrossFit and intermittent fasting, you need to ensure that you are getting enough calories from the foods you do eat. Get Grass-Finished Meat Delivered to Your Doorstep with ButcherBox. While intermittent fasting does provide some metabolic benefits, it is not a replacement for a healthy, balanced diet.

Meal Planning for Intermittent Fasting and CrossFit

When it comes to meal planning, it is important to ensure that you are eating enough of the right foods to fuel your CrossFit workouts and intermittent fasting. The best way to do this is to focus on nutrient-dense foods such as lean proteins, healthy fats, and complex carbohydrates. Some examples include:

  • Grass-fed lean meats
  • Organic vegetables
  • Nuts and seeds
  • Fruits
  • Healthy fats such as olive oil, coconut oil, and avocado
  • Whole grains and legumes

It is also important to ensure that you are getting enough calories to fuel your CrossFit workouts. While intermittent fasting does help you to reduce your overall calorie intake, it is not a replacement for a healthy, balanced diet.

The Importance of a Healthy Breakfast

One of the most important meals of the day is breakfast. Eating as soon as you wake up to break the fast is essential to set yourself up for healthy eating throughout the day. When you are intermittent fasting and CrossFitting, it is important to ensure that your breakfast is full of nutrient-dense foods to provide the energy you need for your workouts. Some breakfast ideas include:

  • Eggs cooked in olive oil with vegetables
  • Smoothie made with protein powder, fruits, and vegetables
  • Oatmeal with nuts, seeds, and fruit
  • Whole grain toast with nut butter and sliced banana
  • Greek yogurt with berries and nuts

It is also important to stay hydrated when you are intermittent fasting and CrossFitting. Drinking plenty of water throughout the day will help to keep your energy levels up and keep your body functioning properly.


Intermittent fasting and CrossFit can be combined to help you achieve your fitness goals. It is important to ensure that you are eating nutrient-dense foods and getting enough calories to fuel your workouts. Eating a healthy breakfast is also essential to set yourself up for success. By following these guidelines, you can maximize the benefits of intermittent fasting and CrossFit.

Does CrossFit training support intermittent fasting?

Intermittent fasting is popular among CrossFit enthusiasts and usually follows one of three protocols: the 16:8 method, the 5:2 method, or the 1:1 method. The 16:8 method requires fasting for 16 hours and leaving an eight-hour eating window.

Is it permissible to exercise while following an intermittent fasting routine?

It is generally safe to practice physical activity while intermittent fasting, according to Accetta. Many people choose to limit their food consumption to a block of six to eight hours, and not eat for the rest of the day (plus or minus 16 hours).

What type of eating plan do the majority of Crossfitters adhere to?

Does Rich Froning practice intermittent fasting?

Rich Froning has previously expressed his preference for intermittent fasting, specifically 16/8, which involves fasting for sixteen hours and then eating within an eight-hour period. His typical workout routine consists of training from 8am until noon, taking a break until 2pm, and then training again until 4 or 5pm with few days of rest.

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