Start here: you probably don’t need a diet
Most people training four or five days a week don’t have a nutrition problem that needs a named diet. They have three ordinary gaps: not enough protein, not enough total food to support the training, and not enough consistency to tell whether either is true.
Fix those three and the rest is detail. Chase the detail first and you’ll spend a year optimising something that was never the limiting factor.
How calorie targets are worked out
Every credible target starts the same way. An equation estimates the energy you’d burn at complete rest — your basal metabolic rate — from your weight, height, age and sex. The Mifflin-St Jeor equation is the usual choice because it holds up reasonably well across ordinary populations.
That resting number then gets multiplied by an activity factor to account for everything you do that isn’t lying still. These factors are rough conventions rather than measurements — someone training four or five times a week with a desk job is commonly estimated somewhere around 1.375 to 1.55. From there you adjust up or down depending on whether you’re trying to gain, hold or lose.
Every calorie target you have ever been given is an estimate with real error bars. It is a starting point to test, not a number to obey. The scale and the mirror over four weeks tell you more than the equation did.
Protein is the one worth getting right
If you change one thing, change this. Protein supports the repair and adaptation that training is supposed to trigger, it tends to be the most satiating of the three macronutrients, and it is the one most people training hard are quietly short on.
Published sports-nutrition guidance for people training regularly generally lands in the range of 1.6 to 2.2 grams per kilogram of bodyweight per day — roughly 0.7 to 1 gram per pound. That is a population range, not a prescription for you. Spreading it across three or four meals appears to be modestly better than loading it all into dinner, but total daily intake matters more than timing.
Carbohydrate and fat: mostly a preference
Once protein and total calories are set, how you divide the remainder between carbohydrate and fat matters far less than the internet suggests. Two qualifiers for hybrid training specifically:
- Carbohydrate fuels hard work. Intervals, threshold running and heavy lifting all run substantially on stored carbohydrate. Cutting carbs very low while training hard usually shows up as sessions falling apart in the back half.
- Fat has a practical floor. Very low fat intakes held for long stretches are hard to sustain and are generally not recommended. Don’t drive it into the ground to make a macro split work.
There is no single correct split. Set protein first, make sure there is enough carbohydrate to fuel your hard sessions, and let fat fill the rest at a level you can sustain.
Around training
The old thirty-minute window advice has been softened considerably by later work — the timing appears far less critical than total daily intake. What is less contested:
- Don’t train hard on empty for long sessions. Something with carbohydrate an hour or two before helps most people.
- Anything over about ninety minutes benefits from fuel during it. This is a skill — practise it in training, not for the first time on race day.
- Eat a normal meal afterwards. Getting protein and carbohydrate in within a few hours covers it.
- Drink to thirst, and pay more attention when it’s hot. Being noticeably dehydrated tends to make hard sessions feel harder and go worse.
Changing bodyweight while training
Gaining or losing weight while training hard is a slow process done well and a destructive one done fast. Aggressive deficits cost strength, wreck sessions and are difficult to sustain.
The workable approach is a modest adjustment held long enough to read the trend: change intake by a small amount, keep protein up, keep training, and weigh yourself on a consistent schedule over several weeks rather than reacting to daily readings. If the trend isn’t moving the way you intend after a few weeks, adjust again — in small steps.
This is general information, not medical or dietary advice, and none of it is individualised to you. If you have a medical condition, take medication, are pregnant, or have any history of disordered eating, talk to a doctor or a registered dietitian before changing how you eat. A professional who can actually see your bloodwork beats an equation.
The ranges on this page are drawn from published sports-nutrition guidance for healthy adults who train. They are population-level starting points, not findings of ours and not a plan for you. Anyone who tells you a single exact number is right for your body is overselling what the underlying science supports.
Where SOFReady sits
The Fuel section works out a calorie and macro range from your weight, height, age and how many sessions you’ve actually logged over the last four weeks — and it shows the math, so you can see how it arrived there rather than taking a number on faith.
Targets are given as ranges rather than a single figure, because a single figure implies a precision the underlying equation doesn’t have. There are recipes with the calories and protein on them, so the numbers connect to actual food rather than staying abstract.