Prevent Muscle Loss During Training: How to Protect Your Muscles
Muscle loss during training is a common issue for many athletes—especially those over 40. However, the good news is that you can prevent muscle loss during training by following the right nutrition and workout strategy. In this blog, you’ll discover why muscle loss happens, how to stop it, and which nutrients are essential for protecting your muscles.


Muscle loss from 40:
Targeted prevention in sport

Nutritional strategies:
Before and during sport

Carbohydrates:
An often underestimated nutrient
Why Does the Body Lose Muscle During Training?
During exercise, your body requires energy to power your muscles. This energy primarily comes from glycogen stored in your muscles and liver, which is derived from carbohydrates. When these glycogen stores are depleted—such as during long or intense workouts—your body begins breaking down muscle protein to generate energy.
This process, known as the catabolic state, leads to muscle loss. For individuals over 40, this issue is even more significant due to natural age-related muscle decline (sarcopenia). However, with the right approach, you can prevent muscle loss during training and protect your muscles over the long term.
Common Mistakes That Lead to Muscle Loss
To prevent muscle loss, it’s important to avoid these common errors:
- Skipping Pre-Workout Nutrition: Entering a workout with empty glycogen stores forces your body to break down muscle for energy.
- Insufficient Daily Protein Intake: Protein is crucial for muscle recovery and growth, particularly with regular exercise.
- Overtraining Without Recovery: Long or overly intense sessions without proper rest can promote muscle breakdown.
Tip: Follow a balanced training and nutrition plan to avoid these pitfalls.
Prevent Muscle Loss During Training: Top Tips
1. Replenish Glycogen Stores Before Training
Adequate carbohydrate intake before training is critical to prevent muscle loss during training. Carbs provide quick energy and shield your muscles from entering a catabolic state.
- Best Carb Sources: Bananas, rice, oats, or carbohydrate-rich drinks (e.g., Maltodextrin).
- Timing: Consume carbs about 30 minutes before your workout.
Example: A small bowl of oatmeal with honey or a banana provides the energy needed for a challenging workout.

2. Prioritize Protein Before and After Training
Protein is the foundation of muscle preservation and growth. Consuming sufficient protein not only stops muscle loss but also promotes muscle recovery.
- Before Training: A small NoDoubt SilverGreen Protein Shake protects muscles and supplies essential amino acids.
- After Training: A protein-rich meal or shake helps your muscles recover and rebuild.
Daily Protein Goal for Athletes Over 40: 1.5–2.0 grams of protein per kilogram of body weight.
3. Combine Carbs and Protein During Longer Workouts
For sessions lasting over an hour, a mix of carbs and protein during training is essential. This combination provides sustained energy and reduces muscle protein breakdown.
Why This Works:
- Carbohydrates replenish glycogen.
- BCAAs (branched-chain amino acids) support muscle recovery and minimize protein loss.
Practical Solution:
- Mix a NoDoubt SilverGreen Shake with a banana or Maltodextrin for the ideal intra-workout drink. This mixture provides:
- 8.3 g BCAAs per serving in the optimal 3:1:1 ratio.
- Quick carbs to restore glycogen levels.
- 5 g leucine per serving: effective muscle recovery and growth, particularly for athletes over 40.
Discover why NoDoubt SilverGreen Shake is perfect for long training sessions.
Case Study: How Nick Prevented Muscle Loss
Nick, a 42-year-old athlete, had been training consistently for years but noticed a decline in muscle mass. His mistake? He often drank only water before workouts and neglected carb or protein intake.
Once Nick added a pre-workout NoDoubt SilverGreen Shake and carb-rich snacks during long sessions (90 minutes or more), he successfully stopped losing muscle. Today, Nick not only trains harder but also sees significant results.

Additional Tips: Frequently Asked Questions
What Supplements Help Prevent Muscle Loss?
- L-Leucine: Boosts muscle protein synthesis, especially for those over 40.
- BCAAs: Prevent muscle protein breakdown during intense training.
- Creatine: Supports energy production and muscle strength.
Learn more about the benefits of BCAAs during intense workouts.
How Important Is Sleep for Muscle Recovery?
Sleep is critical as your body repairs and rebuilds muscle tissue overnight. Aim for 7–9 hours of quality sleep each night.
Conclusion: Prevent Muscle Loss During Training
Muscle loss doesn’t have to be a part of your fitness journey. By replenishing glycogen stores, consuming enough protein, and following a balanced training plan, you can prevent muscle loss during training and achieve your goals. For athletes over 40, these strategies are even more essential to maintain muscle mass and strength.
Ready to take the next step?
Check out our specially designed protein products for athletes over 40.