The Basics: Strength Training

What is Strength Training?

Strength training is a type of exercise that uses resistance to challenge your muscles and make them stronger over time. That resistance can come from weights, resistance bands, machines, or your own body weight.

It is one of the clearest markers of musculoskeletal fitness, or how well your muscles, bones, and joints support movement, posture, and physical function. Because strength supports metabolism, balance, independence, and healthy aging, regular strength training is an important indicator of long-term health and physical resilience.

How Strength Training affects Biological Age

Strength training reflects how well your body maintains muscle, bone, and functional capacity over time. Regular resistance exercise is associated with better body composition, stronger bones, healthier aging, and greater physical independence.

It is also linked to longevity. In a meta-analysis of 341k+ participants, performing any amount of resistance training was associated with a 21% lower risk of all-cause mortality (Saeidifard et al., 2019). A newer meta-analysis found that any amount of resistance training was associated with a 15% lower risk of all-cause mortality, 19% lower cardiovascular disease mortality, and 14% lower cancer mortality, with the greatest benefit seen at around 60 minutes per week. (Shailendra et al., 2022).

Because strength training helps preserve muscle, support metabolism, improve bone density, and maintain balance and everyday function, it becomes increasingly important with age. In Biological Age, Bevel compares your strength training habits to optimal health standards. More consistent resistance training can subtract years from your Biological Age, while too little strength training can add years. Even small amounts matter, and the benefits become more meaningful over time as preserving strength becomes increasingly important for long-term health.

Tips for Strength Training

1. Focus on compound movements: Build your routine around exercises that train multiple major muscle groups at once, like squats, deadlifts, rows, presses, and lunges. These movements are efficient, functional, and effective for building overall strength.
2. Train consistently, not excessively: Aim to strength train 2–4 times per week, depending on your experience and schedule. Consistency matters more than doing long or overly intense workouts.
3. Use progressive overload: To keep getting stronger, gradually increase the challenge over time by adding weight, reps, sets, or improving control and range of motion.
4. Prioritize good form: Proper technique helps target the right muscles and lowers injury risk. Start with a weight you can control well before increasing intensity.
5. Allow time for recovery: Muscles get stronger between workouts, not just during them. Rest days, sleep, and adequate recovery are essential for progress.
6. Support training with nutrition: Eating enough protein and total calories helps your body repair and build muscle. Recovery is harder when training is not matched with adequate nutrition.
7. Stay patient: Strength training results build over time. Even short, consistent sessions can lead to meaningful improvements in strength, muscle, and long-term health.

Improving your strength training habits is one of the most effective ways to support a younger Biological Age and a stronger, healthier future.