Why Strength Training Is Essential for Women

Strong Her: Why Women Should Train According to Their Physiology

For decades, fitness advice was largely based on research conducted on men, with the same training and nutrition recommendations later applied to women. However, growing scientific evidence shows that women respond differently to exercise due to their unique physiology, hormonal cycles, and changing nutritional needs throughout life.

According to Andy Moore, Research & Development and Quality Control Manager at NPL Nutritional Performance Labs, it’s time to rethink women’s fitness by embracing approaches that work with female biology rather than against it.

Women’s Bodies Work Differently

Women’s hormones—including oestrogen, progesterone, testosterone, cortisol, and thyroid hormones—play a major role in determining strength, energy, recovery, and mood. These hormone levels fluctuate throughout the menstrual cycle, influencing how effectively women perform and recover from exercise.

During the follicular phase, rising oestrogen levels improve muscle performance and recovery, making it an ideal period for more intense workouts. In contrast, the luteal phase often brings higher body temperatures and increased fatigue, making exercise feel more demanding despite identical effort.

Rather than viewing these fluctuations as obstacles, experts say they should be recognised as natural physiological changes that deserve consideration when planning exercise routines.

Resistance Training Delivers Exceptional Benefits

One of the biggest misconceptions surrounding women’s fitness is the fear that lifting weights leads to excessive muscle gain. Scientific evidence tells a very different story.

A 2024 study published in the Journal of the American College of Cardiology, which followed more than 400,000 adults over two decades, found that women who participated in regular strength training reduced their risk of cardiovascular-related death by an impressive 30%.

Even more remarkably, researchers found this benefit was nearly three times greater than the cardiovascular protection experienced by men performing the same resistance training.

The study also revealed that women require significantly less aerobic exercise to achieve similar longevity benefits. While men needed approximately 300 minutes of moderate aerobic exercise per week, women achieved comparable mortality benefits with just 140 minutes weekly.

Despite these advantages, only one in five women currently completes a weekly strength-training session.

Building Muscle Protects More Than Strength

Strength training offers benefits far beyond appearance.

Muscle tissue plays a vital role in regulating metabolism, supporting insulin sensitivity, protecting joints, improving posture, and maintaining healthy bones.

These benefits become increasingly important during menopause, when declining oestrogen levels accelerate bone loss.

According to the Bone Health and Osteoporosis Foundation, around eight million of the estimated 10 million Americans living with osteoporosis are women. Resistance training, combined with sufficient protein intake, remains one of the most effective strategies for preserving bone density and reducing fracture risk.

Exercise Supports Mental Wellbeing

The benefits of regular exercise extend well beyond physical health.

Exercise stimulates the release of serotonin and dopamine, helping regulate mood and emotional wellbeing.

Research published in the Journal of Psychosomatic Research found that postmenopausal women who exercised experienced an 18% to 22% improvement in symptoms of anxiety and depression, while non-exercising participants showed no meaningful improvement.

Regular physical activity has also consistently been linked to improved sleep quality, faster sleep onset, longer sleep duration, and fewer night-time awakenings.

Fitness Should Evolve Through Every Stage of Life

Women’s fitness needs naturally change throughout adolescence, adulthood, pregnancy, perimenopause, and menopause.

Experts recommend focusing on functional strength rather than appearance alone. Maintaining muscle mass allows women to carry groceries more easily, keep up with children, maintain balance as they age, climb stairs comfortably, and remain independent later in life.

Proper nutrition also plays an essential role. Adequate protein intake, key vitamins and minerals, and recovery-focused nutrition help support muscle repair, hormonal balance, and long-term health.

A New Era for Women’s Fitness

The growing body of scientific research makes one message increasingly clear: women benefit enormously from training programmes designed specifically for female physiology.

Strength training, combined with balanced nutrition and recovery strategies, offers powerful protection for heart health, bone strength, mental wellbeing, and healthy ageing.

As research continues to evolve, experts believe the fitness industry should move beyond one-size-fits-all advice and embrace evidence-based approaches that recognise the unique needs of women’s bodies.

With women requiring less exercise volume to achieve significant health outcomes—and gaining even greater benefits from resistance training than men—the future of women’s fitness is no longer about doing more. It’s about training smarter.