A few years ago, I was training for something, and I cannot even remember what now (which tells you how well that went) and I decided that six days a week was good, but seven was obviously better. I was lifting, doing circuits, and running every day of the week because rest felt like weakness, and I was extremely committed to not being weak. What actually happened is that I got slower, weaker, perpetually sore, and then injured my shoulder in a way that required actual physiotherapy and took me out for three months. The upside? I had a lot of time to lie very still and think about what I had done.
The thing is, I thought I was being disciplined. I thought the discomfort was progress. I had completely misunderstood how the whole system works: training isn’t what makes you stronger. It is what creates the conditions for getting stronger. The actual getting stronger happens afterwards, while you are doing nothing, and if you do nothing, you never actually get there. You just accumulate damage until your body takes the decision out of your hands entirely, which is what my shoulder did, and I resented it for months before I understood it was correct.
Here is the biology of it, briefly. When you lift weights or run or do any kind of resistance training, you create tiny tears in your muscle fibres. This is the point, not the side effect. Your body responds to that stress by repairing those fibres slightly stronger and more resilient than before, so that next time the same load feels easier. But the repair does not happen while you are training. It happens while you are still. Rest is not passive recovery from the interesting work. It is an interesting work, just wearing different clothes.
Train hard every day without recovery, and you are not being dedicated, you are just accumulating damage with great consistency. The body does not get stronger; it gets tired and flat and eventually injured in ways that will take the rest day question entirely out of your hands. This is the thing fitness culture does not say loudly enough, possibly because “do less, more strategically” is a harder sell than “no days off.”
The other thing fitness culture does not say loudly enough is that a rest day is not the same as a horizontal day, though a horizontal day is sometimes exactly what the body needs and should be taken without guilt. A rest day means not doing intense, muscle-damaging exercise. It does not mean not moving. Walking, gentle stretching, an easy swim, a slow yoga class, all of this counts as active recovery, keeps blood moving through the muscles you worked, and supports the repair process without adding to the load. You can move every day. You should not train hard every day. These are different things, and confusing them is what leads to the grinding, joyless fatigue that eventually convinces people that exercise simply does not work for them, when actually they just never gave it the space to.
Some people skip rest because they are afraid of losing progress. They will not. A body that is perpetually broken down has nothing to adapt from. Some skip it because the rest feels like a small moral failure, a slippage in commitment. It is not. It is a strategy, and arguably the most important one in the whole programme. And some people, genuinely, feel better moving every day, which is fine, as long as some days are deliberately and unapologetically easy, and they are not confusing movement with training.
I now take rest days with the same intention I bring to training sessions, which is to say I protect them, I do not feel bad about them, and I do not fill them with something intense just because I feel restless. My shoulder has not given me any trouble since. Coincidence, right?
1,000 Ways to Live Well is a Mille publication. Mille is a modern nutrition brand built around everyday rituals, starting with protein that doesn't ask you to compromise on taste. millesupergrain.com