How Long Before You See Bulking Results? Weeks 1, 4, 8

You've been eating more for ten days, the scale says the same number, and you're wondering if it's working. It might be. Here is what a bulk should look like on the scale at weeks 1, 4 and 8, and when "nothing's happening" is real.

The short answer

On the scale, judge a bulk after 4 weeks, not 4 days. If you're eating about 500 calories above maintenance, expect roughly 1 lb (0.5 kg) a week on the weekly average, so about 4 lb (1.8 kg) by week 4 and 8 lb (3.6 kg) by week 8. In the mirror it takes longer, and that's normal. Day-to-day weight swings of 1 to 3 lb from water and food in your gut are bigger than a week of real gain.

One man, eight weeks, real arithmetic

Take a 23-year-old man, 5'9" (175 cm), 150 lb (68 kg), lifting three days a week with a light-activity routine. Bulky's calculator (Mifflin-St Jeor, then activity and training) puts his maintenance at about 2,345 calories and his bulk target at about 2,900, with 109 g of protein as the floor. That's a surplus of about 555 a day, or about 3,900 a week.

A pound of body weight is roughly 3,500 calories as a rule of thumb, so that surplus is worth about 1.1 lb a week if every day goes to plan. Here is what he should expect on the weekly average:

• Week 1: up 0 to 2 lb, or nothing at all. More food, more carbs and more sodium hold water, and your gut simply contains more. This number is mostly noise, in both directions.
• Week 4: about 4 lb up (154 lb). This is the first reading worth acting on.
• Week 8: about 8 lb up (158 lb) if he stayed on target. Not all of that is muscle. How much is fat depends on training, sleep and how fast he gains, and you can't read it off a scale.

If a pound a week feels too fast, a surplus of about 250 a day gives about half a pound a week. It's slower, and the arithmetic is the same.

Why week 1 lies to you

Your daily weight moves with water, salt, how recently you ate and the bathroom. A 2 lb jump or drop overnight tells you nothing about tissue. Compare the average of week 2 to the average of week 1, not Monday to Sunday.

The common failure is the opposite one. A man eats "more" for three weeks, sees no change, and decides his metabolism is special. Usually he is eating a surplus on five days and maintenance on two. If that sounds familiar, the real-day audit shows how it adds up, and the two-week test tells you whether you're really above maintenance.

What to do at week 4

Look at the weekly averages, not any single morning:

1. Up 3 to 5 lb (1.4 to 2.3 kg): on track. Change nothing.
2. Up less than 2 lb (0.9 kg): you're short of the target. Add about 250 calories a day, then wait two more weeks before judging again.
3. Up more than 6 lb (2.7 kg): faster than planned. Some of the extra will be fat. Trim 200 to 300 a day.
4. Down: you're eating less than you think. Check the weekends, cooking oil and skipped meals first.

Strength is your second marker. If your lifts are rising by week 4 to 8 while the weight climbs, the food is doing its job. If you're losing weight without trying, or something feels wrong, talk to a doctor.

Do this today

Write down your weight tomorrow morning, after the bathroom and before food, and every morning after. Put the date of your day-28 check on your calendar. Until then, only the weekly average counts.

Where a photo helps

The weeks go by faster than the arithmetic does, and a bulk quietly stalls when one day in three comes in short. Bulky reads calories, protein, carbs and fat from one photo of a meal and measures your day against a surplus target, so you see a short day while you can still fix it. A photo is a very good estimate, not a food scale, and you can correct any item after the scan.