Food and training: how to spend the fibre you have

You can ignore every drug in the previous essays and still add muscle. Most people who look as if they train have done exactly that. The week that does it is dull on purpose. You recruit the fast fibres often enough that they grow. You eat enough protein that the ribosome can finish myosin. You eat enough energy that the body is not dismantling last month's fibres to get through Thursday. You sleep. You repeat it longer than a burst of motivation. The hormones you already make — a pulse of growth hormone in deep sleep, insulin after the meal, testosterone at whatever your axis currently writes — sit on top of that week. They are not a substitute for it.

In short. Muscle grows from hard lifting, enough protein, enough food, and sleep, repeated for months. Your own hormones help. They do not replace the week.

Start with the fibre you mean to keep. If you want a larger, stronger muscle, the sets have to reach type II. That means a load you cannot move forever: heavy work in the five-to-ten-rep neighbourhood, or lighter work taken to the last honest reps before the set falls apart. Henneman still sorts the motor units. Leave three reps in reserve on most sets if you are going to be able to come back tomorrow; take some sets closer when the joint is happy. Rest two to three minutes on squats, hinges and presses so the next set is still a force set and not a panting contest. About ten hard sets per muscle per week is the region Schoenfeld's meta-analyses keep finding as a floor for trained people, with more available until sleep and tendons say no. Write that down as a landmark. Then adjust it because you are a person, not a forest plot.

In short. Lift hard enough to wake the fast fibres, rest long enough to do it again, and accumulate roughly ten serious sets a week per muscle. That is a research landmark, not a personality.

Progress is a heavier bar, or one more rep at the same bar, or the same work with a joint that is quieter than last month. It is not a new exercise every Monday. The set essay is the evidence behind the numbers: how close to failure, how many sets, how long a rest, why the stretched part of the rep keeps winning trials. This paragraph is the week those numbers have to survive inside. Type II fibres answer tension they have seen before, repeated, a little harder. Change the movement when it hurts or when it stalls for a fortnight, not because you were bored. Easy cardio stays in the week for the heart and the type I fibres — two or three sessions you can talk through — parked away from the heavy work so you are not glycogen-empty when you need a squat. The mitochondria essay is that half. This one is the myofibril.

In short. Add a little weight or a rep over time. Keep some easy cardio for the heart, but do not do it in a way that wrecks the heavy session.

Protein is already a whole essay, so I will not pretend to rewrite sestrin2. The working range for someone who lifts is still about 1.6 to 2.2 grams per kilogram of body weight a day, in three to five meals that each clear a leucine threshold — roughly a palm-and-a-half of meat, fish, eggs, dairy or a carefully built plant plate. After the session that recruited the fast fibres, one of those meals should land within a couple of hours. The muscle-full effect means a second identical shake an hour later is mostly urea. Collagen does not count as that meal. Neither does wine. Older lifters need the per-meal dose a little higher, because the switch is duller.

In short. Eat about 1.6 to 2.2 grams of protein per kilogram a day, split into real meals, with one of them after you lift. A collagen bar is not that meal.

A surplus is how new tissue gets paid for. Something like 200 to 400 kilocalories above what holds your weight is the band most hypertrophy studies wander around: enough to build, not so much that the gain is mostly fat. Weigh yourself a few mornings a week and look at the trend, not the Tuesday. If the trend is flat for a fortnight and the lifts are flat, eat a little more. If the waist is racing ahead of the bar, eat a little less. In a deficit — when you want fat gone and muscle kept — protein stays at the top of that range, lifting stays heavy so the type II fibres still hear their name, and the scale is allowed to drop slowly. A crash diet plus cardio and no bar is how you keep type I endurance and lose the muscle you meant to show off. Androgens defend lean mass in that deficit better than training alone, in the trial literature, and they still do not belong in this paragraph as a plan.

In short. To grow, eat a little more than you burn — a few hundred calories, not a dirty bulk. To lose fat, keep lifting heavy and keep protein high, and drop weight slowly.

Carbohydrate is the fast fibre's fuel, not a moral category. A hard lower-body day can spend a serious fraction of vastus glycogen. Put starch or fruit around that session — before, after, or both — so the next day's sets still recruit the fibres you think you are training. On easy days you need less. A low-carbohydrate pattern can work for people whose training is easy and aerobic, and it punishes people whose training is heavy. Type IIx does not become a fat-burning specialist because you skipped rice. It becomes a fibre that drops out of the set. Fat in the diet is for hormones and for calories. It is not the glycogen.

In short. Eat carbohydrate around hard sessions so the fast fibres have fuel. You need less on easy days. Skipping it does not turn strength work into fat-burning work.

Creatine monohydrate is the one supplement I will talk about without flinching, because the mechanism is small and the trials are boring in the best way. Three to five grams a day saturates phosphocreatine in muscle over a few weeks. Type II fibres use that store for the first seconds of a heavy rep. You get a little more force and a little more cell water. You do not get a new receptor. Load with twenty grams a day for a week if you are impatient; the daily dose gets you to the same place. Drink water. If your kidneys are unhealthy, ask a doctor before you add it. Everyone else has a cheap molecule with a job.

In short. Three to five grams of creatine a day helps the fast fibres repeat hard efforts. It is not a hormone. It is a fuel store you can fill from a jar.

Sleep is when a large share of the growth-hormone pulses actually happen, and when the nervous system lets you recruit those motor units again tomorrow. Five hours and a pre-workout stimulant is a smaller hormone pulse and a worse squat. You do not need a perfect score. You need most nights to be long enough that you are stronger on Friday than you were on Monday. Alcohol after the session blunts synthesis — the tracer papers are unkind — so a heavy day and a heavy night out are a cancelled pair.

In short. Sleep is part of the training, because growth hormone and recovery live there. Short nights and a lot of alcohol give back the session you just did.

A drug cannot recruit a motor unit you never asked for. It cannot put leucine in the cytosol. It cannot put glycogen in a IIx fibre that trained fasted and carbohydrate-free. It can raise the gain on a week that already contains tension, protein and energy, which is the honest reading of Bhasin, and it can paper over a week that is missing those, for a while, with a bill attached. If you are not adding reps or load across a month, fix the sets, the food and the sleep before you fix the receptor. The fibre is a patient accountant. It keeps what you repeated.

In short. If the lifts are not moving, change the training and the food first. A drug amplifies a week that already works. It does not invent the week.

Here is the week in one sitting, so you can actually use it. Three days of lifting that cover squats or a hinge, a press, a pull, and some single-leg or arm work, taken hard, rested properly. Two easy conditioning sessions on other days. Protein at 1.6 to 2.2 grams per kilogram, one meal after lifting. Carbohydrate piled next to the hard days. Creatine daily. Bed before you are useless. A modest surplus if the mirror and the bar both say you are stuck too small; a slow deficit if you are carrying fat you would rather not keep, with the lifting left in. Deload every month or two, or when a tendon starts muttering. That is the whole practical section. It is not a twelve-week PDF. It is the physiology, scheduled.

In short. Lift three days, walk or cycle easily twice, eat protein every day, eat more carbohydrate when you lift hard, take creatine, sleep, and eat a little extra if you want to grow. Repeat for months.

None of that is medical advice. Chest pain, a joint that swells, a period that has stopped, a mood that has turned, or blood pressure you have never measured are reasons to see a clinician, not reasons to add a compound. Anabolic steroids, insulin as a muscle drug, and beta-agonists are outside this shop and outside this plan. The peptides in the catalogue remain research reagents for named receptors. In-vitro. Not a cycle sitting at the bottom of a diet article.

In short. This is a way to eat and train, not a prescription. Steroids and insulin-as-a-shortcut are not part of it. The peptides for sale are for the bench, not for this week.