This tool calculates your one-rep max (1RM) based on your input weight, reps, and exercise type.

Enter your current body weight, the type of exercise, the weight you're lifting, and the number of repetitions completed. The tool will calculate your estimated 1RM.

Enter your numbers above

For those practicing intermittent fasting, knowing your 1RM helps tailor workouts to fit eating windows and optimize muscle retention.

Examples for Intermittent Fasting & Fitness

Bench Press After 16:8 Fasting
Estimated 1RM: 75 kg
Calculating your one-rep max can help you optimize your workout and ensure muscle preservation during your fasting periods.
Deadlift Pre-Fast Workout
Estimated 1RM: 120 kg
Knowing your one-rep max helps in planning your lifting strategy around fasting to maintain performance.
Squat Post-Fast Nutrition Timing
Estimated 1RM: 60 kg
Understanding your lifting capacity aids in scheduling your workouts effectively around eating windows.

Understanding 1RM

The one-rep max (1RM) is the maximum amount of weight you can lift for one repetition of a given exercise. Knowing your 1RM is crucial for setting appropriate weight and intensity levels for your training, especially when balancing fasting and fitness.

Training Around Eating Windows

Timing your workouts around your eating windows is essential for optimal performance. Training during the fasting period may require adjustments in intensity and volume to maintain energy levels and muscle preservation.

Breaking Fast Post-Workout

After a workout, breaking your fast with the right nutrition is vital for recovery. Focus on protein and carbs to replenish glycogen and support muscle repair, ensuring your body gets what it needs after a challenging session.

Tips for Intermittent Fasting & Fitness

  1. Consider training just before your eating window to maximize energy and recovery.
  2. Stay hydrated during fasting hours to maintain performance levels.
  3. Incorporate lighter workouts during fasting days to prevent fatigue.
  4. Use your 1RM to structure your workouts effectively, ensuring progressive overload.

Track all your intermittent fasting & fitness metrics in FirstRep. Start free with up to 3 clients.

Frequently Asked Questions

How does fasting affect my workout performance?

Fasting can initially lower energy levels, but many find they adapt and can perform well. It's important to listen to your body and adjust workout intensity accordingly.

What should I eat after breaking my fast?

Focus on a balanced meal with protein, healthy fats, and complex carbs to replenish energy and support muscle recovery.