Plenty of people talk training with real passion, then get suddenly sloppy the moment the conversation turns to the meal that follows. Even though, from the instant the barbell goes down, the body's attention has already shifted to one question: is there material on hand to repair the broken-down tissue? First on the list of materials is protein. And in Japan, the government has set a concrete number for how much of it to take in.
65 g and 50 g: national figures revised every five years
In the 2025 edition of the Dietary Reference Intakes for Japanese, which the Ministry of Health, Labour and Welfare revises every five years, the recommended dietary allowance for protein is set at 65 g per day for men aged 18-64 and 50 g for women. The recommended allowance is calculated as a level at which nearly everyone can meet their requirement. "65 grams" means little on its own, but translate it into food and the picture changes. One egg is around 6 g, a pack of natto (fermented soybeans) around 8 g, 100 g of chicken breast a little over 20 g — in other words, it is an amount you reach only by properly building three meals a day that include meat or fish. Settle breakfast with a sweet roll and coffee, and you are left making up the difference over two meals; things get busy fast.
The harder people train, the more they bet on "right after the workout"
There is a culture that treats the post-workout protein shake as sacred. Refueling after exercise has its point, of course, but viewed as a supply of building materials, distribution across the whole day is the foundation, more than any single large dose. The body's tissues are being rebuilt constantly, so the demand for materials runs 24 hours a day. Someone who goes to the gym but skips breakfast is like a builder who places the construction order and then halts the delivery of materials — a feeling I can vouch for from my own kitchen, having cooked my own three meals a day.
The practical side of distribution can be assembled even at a convenience store. Boiled eggs, salad chicken, Greek yogurt, soy milk, canned tuna, cheese. All of them long-standing staples — no "HIGH PROTEIN" lettering required for the contents to be a protein source. On days of business trips or overtime, picking two from this lineup and adding them to a meal plugs the hole left by the meal you would otherwise drop. Whether to buy protein powder is a question for after this foundation is in place — and a lot of people seem to have the order reversed.
Why this topic now? Because protein has become a boom word. Convenience-store shelves are lined with products advertising high protein, and the number has taken on a life of its own. What tends to get forgotten in the boom is a simple fact: without buying anything special, the old lineup — eggs, natto, meat, fish — gets you to the guideline. Before choosing products, counting your own three meals is faster.
Add one protein source to tomorrow's breakfast
- Add an egg, a pack of natto, or a yogurt to breakfast. Fill the most-skipped meal first.
- Roughly count your daily total. Counting just the main-dish meat, fish, eggs, and soy products gives you the broad picture.
- On the day after training (your rest day), eat exactly as usual. The repair work continues on days you don't exercise.
If you have a medical condition with dietary restrictions, put your physician's or registered dietitian's instructions ahead of this guideline.
