Spring reset: what your body really needs now

The first real day of spring has something telltale about it. The sun is suddenly different, the air smells of wet grass and thawed earth - and you want to do everything at once. Running, cycling, the first tour in the mountains. It's been a long winter, your body feels sluggish and now you finally want to get going again.

The problem is that your body is not yet where your head already is.

Hibernation, which we humans don't really hibernate, still leaves its mark. Anyone who has trained less, spent less time outdoors and sat more in the months from November to February starts with a body that is biologically in a real state of transition. No weakness, no failure - just physiology.

Less daylight means less serotonin production and an altered melatonin rhythm. This not only affects sleep, but also the willingness to train and the ability to regenerate. At the same time, many people's vitamin D levels drop - a hormone that regulates muscle strength, the immune system and mood, among other things. Anyone who has spent little time outdoors in winter has built up a real deficit here.

There is also the muscular aspect: after just two to three weeks of reduced exercise, the body begins to lose muscle mass - not dramatically, but noticeably. Endurance capacity, VO2max and the efficiency of the cardiovascular system also decrease. The good thing about this is that if you already have a trained base, you will build up again more quickly than you have lost. Muscle memory is real - and it works for you.

Spring is therefore not a restart, but a return. And returning works differently to building up.

The most common spring injury is not caused by bad luck, but by impatience. The mind remembers the last summer self - the performance, the distances, the weights. The body hasn't got that back yet. This gap between self-image and actual state is the moment when tendons are overloaded, knees protest and backs go on strike.

The reset doesn't work at full throttle, but with intelligence.

What this means in concrete terms: the first two weeks belong to the body, not the ego. Lower intensity, shorter units, more focus on movement quality than on performance values. If you run, you run slowly - zone 2, suitable for conversation. If you train strength, work with moderate weights and pay attention to clean execution. If you want to go into the mountains, choose the shorter tour first.

That doesn't sound like much. But it is the foundation on which the next few months will be built.

One of the most effective spring reset measures costs nothing and doesn't require an app: get out. And early at that. Morning daylight - ideally in the first 30 to 60 minutes after waking up - resets the internal clock, regulates the cortisol rhythm and improves the quality of sleep at night. This is not a wellness recommendation, but chronobiology.

People who spend little time outdoors in winter often have a slightly shifted circadian rhythm - earlier tiredness in the evening, sluggish waking, low motivation in the afternoon. Morning light is the most precise tool for correcting this. No sunglasses in the first few minutes, direct light, even on cloudy days.

Combined with a short exercise session outside - even 20 minutes of brisk walking is enough - this has an effect that no supplement can replicate.

Spring tempts us into detox promises and calorie deficits. Both are wrong at the moment. If you are rebuilding your body, you need sufficient protein - at least 1.6 grams per kilogramme of body weight per day - and a solid energy base. Muscle building and simultaneous fat loss only work for trained people with sufficient leeway; those just coming out of winter should first build up, then optimise.

What specifically helps: protein-emphasised meals in the morning (eggs, quark, pulses), sufficient carbohydrates around training, and lighter meals in the evening. Asparagus is now in season, early vegetables, first herbs - good for digestion, good for micronutrient density, good for your mood.

And if you haven't had your vitamin D level measured yet: now would be the right time.

What makes spring so special is not the pressure to start again. It is the body's genuine biological openness to change. After a winter with fewer stimuli, the organism reacts more sensitively to training, light and nutritional stimuli. The ability to adapt is high - if you don't waste it immediately by overloading yourself.

If you use this window wisely, you can lay a foundation in four to six weeks that will last the whole summer. No miracle method, no protocol that you have to buy. Just a body that is allowed to arrive again - in the season, in the light, in movement.