Why so Many Men Over 40 Struggle to Gain Strength and Muscle – and How to Fix It

Many men over 40 are training while exhausted without even realising it. They’re not injured or ill – they’re simply running on empty. They wake up tired, spend most of the day sitting at a desk, juggle work and family responsibilities, rely on caffeine to get through the afternoon and still expect to perform at their best in the gym.

According to physique transformation coach José Ruiz, that combination is quietly undermining progress.

‘Many men assume they need to train harder,’ says Ruiz. ‘In reality, the issue is often that they’re trying to build muscle and lose fat while chronically under-recovered.’

The problem, he explains, is that the body doesn’t distinguish between training stress and life stress. A difficult conversation, poor sleep, a demanding job and a hard workout all contribute to the same overall stress load. When that load exceeds your ability to recover, performance starts to suffer.

Most men spend the majority of their day in a state of constant stimulation.

Notifications, emails, social media, work deadlines and an endless stream of information keep the nervous system switched on from morning until night. By the time many men get to the gym, they're already mentally exhausted.

‘People aren't arriving at training recovered and ready to perform,’ says Ruiz. ‘They're arriving overloaded and trying to compensate by training harder, doing more volume or relying on stimulants.’

That approach creates a familiar pattern. You're always busy, always active and always doing something – yet somehow your energy levels continue to decline.

Caffeine can improve focus, alertness and performance in the short term. The problem starts when it becomes the foundation of your energy levels.

Many men fall into a routine that looks something like this: coffee first thing in the morning, another hit of caffeine in the afternoon, then an intense training session in the evening. Meanwhile, they may have spent weeks or months without genuinely recovering.

According to Ruiz, this can leave the nervous system permanently switched on.

‘The feeling of energy becomes artificial, but the fatigue continues accumulating underneath,’ he says.

The result is often poorer sleep, slower recovery and an increasing dependence on caffeine simply to feel normal.

Many men still view recovery as passive. If they're not training, they assume they're recovering.

In reality, recovery is an active physiological process.

During sleep, the body repairs muscle tissue, regulates hormones, restores the nervous system, controls appetite and consolidates learning and movement patterns. When sleep quality deteriorates, every one of those processes suffers.

‘Physical performance drops, recovery slows, inflammation increases and the body becomes less efficient at managing energy,’ says Ruiz.

This is why many men feel as though they're doing everything right in the gym but still aren't progressing. Often the limiting factor isn't training effort – it's recovery capacity.

Stress doesn't just affect how you feel. It can also affect how your body responds to training.

When stress becomes chronic, cortisol levels remain elevated for longer periods. While cortisol plays an important role in helping us respond to challenges, excessive levels can interfere with sleep quality, recovery, appetite regulation and hormone production.

According to Ruiz, this is one reason many men over 40 feel stuck.

‘They train hard but don't see results because the body is prioritising adaptation to stress before it focuses on building muscle or losing fat.’

Over time, that can make progress feel increasingly difficult despite greater effort.

One of the biggest mistakes Ruiz sees is men trying to solve fatigue with even more stress.

More cardio. More sets. More caffeine. More intensity.

It feels productive, but it often pushes recovery even further out of reach.

‘The body doesn't improve during training,’ says Ruiz. ‘It improves when it recovers from training.’

If your nervous system is already overloaded, adding more work rarely solves the problem. In fact, it can make it worse.

Rather than automatically adding another workout, Ruiz recommends focusing on the fundamentals that support recovery.

That means:

• Getting more sleep
• Reducing unnecessary stress where possible
• Walking more
• Spending less time on screens
• Creating genuine downtime during the day
• Prioritising recovery as seriously as training

These habits may not feel as productive as smashing another session in the gym, but they're often what unlock progress.

According to Ruiz, training while exhausted has become so normalised that many men no longer remember what it feels like to be genuinely recovered.

‘Overwork, screens, caffeine and lack of rest directly affect performance, hormones and the body's ability to adapt,’ he says.

The irony is that many men don't need another workout programme. They don't need more cardio or another supplement.

They need fewer things competing for their recovery.

‘In many cases, physical progress doesn't come from doing more,’ says Ruiz. ‘It comes from stopping the behaviours that keep you permanently stressed and allowing your body the opportunity to recover properly.’

Roberto Cabezas

Roberto Cabezas es especialista en fitness, CrossFit, culturismo, material de entrenamiento, nutrición y suplementación deportiva en Men's Health España. Licenciado en Periodismo por la Facultad de Ciencias de la Información, en Madrid, siempre me ha gustado el deporte. Jugué al fútbol, practiqué karate, tenis y ahora soy un apasionado del pádel y entrenar en el gimnasio. Creo firmemente en que llevar una vida saludable, comiendo bien y haciendo ejercicio a diario, es fundamental tanto para el cuerpo como para nuestra salud mental. Y animo a combatir el estrés con el entrenamiento fitness mediante rutinas de ejercicios.

Uno de mis hobbies es comprar comida porque me encanta comer, sobre todo carne, pero también la fruta y los postres healthy. No me falta mi batido de proteínas diario y puestos a recomendar, prueba la crema de cacahuete con plátano, esta es una de muchas de las recomendaciones que puedes encontrar entre los contenidos de nutrición en los que escribo y trato temas como, la creatina, proteína whey entre otros.

En lo profesional, antes de formar parte de la Healthy Unit de Hearst Magazines, estuve casi 20 años en las revistas Teleindiscreta, TP y Supertele, de la misma compañía, donde aprendí a ser periodista. Antes pasé por una consultora económica y una web femenina. ¿Más aficiones? La lectura, la música, el cine, las series y jugar con mis hijos. ¡Vive y deja vivir!