DOMS or injury: how to tell growth from damage
Dull muscle pain on the second day — growth. Sharp joint pain at the moment it happens — injury. Between the two — overtraining. A table of differences and what to do in each case.
Training is the signal, food is the material. Without the signal, the material turns into fat; without the material, the signal goes nowhere. The good news: there are few rules here, and most “sports” truths — about protein in the first 30 minutes, carbohydrates before training, and protein shakes being mandatory — have not stood up to scrutiny. The main topic page — strength training.
1,6-2 g/kg
of protein per day
the total matters more than timing
24-48 h
the post-workout synthesis window
not 30 minutes
3-5 g
of creatine per day
daily, without loading
24-72 h
muscle soreness
longer-lasting or in a joint — not muscle soreness
The “30-minute anabolic window” is a myth from the ’90s. Protein synthesis after strength training remains elevated for 24-48 hours, and the muscle needs protein throughout this entire period: 30-40 g per serving, three to four times a day, for a total of 1,6-2 g per kg of body weight. Eating 100 g of protein in one sitting means half of it will go to waste. Protein powder is food, not magic; it is only needed when you cannot get enough from your meals. In-depth analysis — protein around training, the basics — protein on a low-carb diet.
With this method, strength training often falls at the end of the fasting window. It works: strength is slightly lower than after eating, while muscle growth is the same when protein is consumed in the first meal afterward. What does not work is a hard workout after 18+ hours of fasting while stressed and without salt. Both options are covered in — fasted or fed, the basics — fasting and training.
| When | What | Why |
|---|---|---|
| 1-2 hours before (if you eat) | 30 g protein, fats, vegetables | strength and satiety; without sugar — a roller coaster |
| 30 min before | 300-500 ml water with salt, coffee if desired | strength and tolerance |
| During | water | — |
| In the first meal afterward | 30-40 g protein, vegetables, fats | material during the synthesis window |
| Every day | 3-5 g creatine | strength, volume, bones after 45 |
| Not needed | carbohydrates “for energy,” mass gainers, BCAAs | on a low-carb diet, energy comes from fat; BCAAs are useless with adequate protein |
Hundreds of studies: increased strength in a set, increased muscle volume, and in women over 45 — stronger bones and improved cognitive function. 3-5 g of creatine monohydrate per day, every day, without a “loading” phase, at any time. The first month — plus 1-2 kg of water in the muscles: this is fullness, not fat. Safe for the kidneys in healthy people — proven over decades. In-depth analysis — creatine for women.
Muscle soreness is a dull pain in the muscle after 24-48 hours, symmetrical, easing with movement, and resolving within 2-3 days. An injury is sharp, located in a joint or a specific spot, appears at the moment of injury, does not ease during warm-up, and may involve swelling. The first means growth; the second means stop and see a doctor. Between the two is overtraining: pain everywhere and all the time. In-depth analysis — muscle soreness or injury, recovery — recovery and muscle pain.
After 45, muscle responds less effectively to protein: a serving that triggered synthesis at 30 no longer does so. The threshold is 35-40 g of complete protein per meal, three times a day, for a total of 1,8-2 g/kg. That is 150-200 g of meat or fish each time — more than most women eat. Plus leucine: it is found in the greatest amounts in meat, eggs, cheese, and whey protein; plant sources require portions one-third larger. Creatine after 45 has evidence not only for muscles, but also for bones and memory. Without enough protein, strength training after 45 does not work — there is nothing to build with, and this is the most common reason for “I train, but my body does not change.” About perimenopause and nutrition — nutrition during perimenopause.
Sports nutrition is an industry that sells what a plate provides for free. Not needed: BCAAs with adequate protein from food; pre-workout formulas — coffee does the same; mass gainers and carbohydrates “for energy” — on a low-carb diet, energy comes from fat; isolate “immediately afterward” — an ordinary dinner works just as well; L-carnitine, glutamine, and “fat burners” — there is no evidence. Needed: 1,6-2 g/kg of protein from food, 3-5 g of creatine, salt, and water. That’s all. Supplement review — five supplements that work, what does not work.
Only if you do not reach 1,6 g/kg through food. Whey or egg isolate — without sugar. It is food, not a supplement.
For everyone who does strength training. Women have lower creatine stores in their muscles, so the effect is often more noticeable.
Yes, at the end of the window: strength slightly lower, growth unchanged. Salt and water beforehand, protein immediately afterward.
| Time | What | Why |
|---|---|---|
| 7:00 | water with salt, coffee | sodium, alertness |
| 7:30-8:15 | strength training at the end of the window (option A) | strength slightly lower, growth unchanged |
| 9:00 | first meal: 40 g protein, vegetables, fats; creatine | the synthesis window remains open for 24-48 h |
| 13:00 | lunch: 35 g protein, salad, avocado | second protein intake |
| 17:00-18:00 | strength training after eating (option B) | full strength |
| 19:00 | dinner: 35 g protein, vegetables, cottage cheese | third intake; cottage cheese — slow protein overnight |
| 22:30 | sleep | muscle grows at night |
Dull muscle pain on the second day — growth. Sharp joint pain at the moment it happens — injury. Between the two — overtraining. A table of differences and what to do in each case.
Hundreds of studies, plus strength and muscle volume; after 45 — plus bones and memory. 3-5 g per day, no loading phase, plus a kilogram of water in the muscles during the first month. Why women need it even more.
With this method, strength training often falls at the end of the fasting window. Strength is slightly lower, muscle growth is the same with protein afterward. When training fasted works, when it backfires, and how to structure your day.
“The 30-minute anabolic window” is a myth from the 90s. Protein synthesis remains elevated for 24-48 hours after strength training. How much, how to distribute it, whether you need protein powder, and why 100 g at once misses the point.
Reviewed by Anastasia Zhukova, Fitness Trainer • Author of a Nutrition and Training System • Creator of an AI Personal Support Platform
A human has reviewed this material against the method and real client practice.
Reviewed September 19, 2026 · next scheduled review: March 19, 2027
✦The first draft was prepared with AI, then edited and reviewed by the author.
