“Your weight won't be consistent if you weigh yourself on Friday and Monday,” she says. “Many people have a different routine on the weekends. They might eat out more, drink alcohol or snack more. Compare that to Friday, if you've been eating consistently for five days, and you'll see a big difference.”
“There's no reason to weigh yourself more than once a week. With daily water fluctuations, body weight can change drastically on a day-to-day basis,” says Rachel Fine, registered dietitian and owner of To the Pointe Nutrition. “Weighing yourself at the same time on a weekly basis will give you a more accurate picture.”
The thing that's most important when it comes to weighing yourself, either weekly or daily, is at what time. Most researchers agree that it's best to weigh yourself first thing in the morning. That way, you're more likely to make it a habit and be consistent with it.
You should step on the scale first thing in the morning. That's when you'll get your most accurate weight because your body has had the overnight hours to digest and process whatever you ate and drank the day before. And you should try to turn that step into a regular part of your routine.
"Weighing yourself daily, or regularly, can be harmful to someone's self-confidence because it can almost create this false narrative of 'My self-worth is conditional: I am either good or bad based on the number on the scale,'" says Rosenblatt.
Research suggests stepping on the scale every day is an effective aid if you're trying to lose weight, but you may want to weigh yourself less often if you're maintaining your current weight. The key to weighing yourself is to not get obsessed with the number on the scale.
“Your skin is the largest organ in the body and absorbs fluid easily,” says Dr. Keith Kantor, a leading nutritionist and CEO of the Nutritional Addiction Mitigation Eating and Drinking (NAMED) program. “After a swim or a shower, your body can absorb 1 to 3 cups of water, increasing your true weight by a few pounds.”
As soon as you bend down, the muscles in your body that do the bending also act to pull up the lower half of your body. So this reduces the pressure your body places on the scales, and make you appear to weigh less.
Daily weight fluctuation is normal. The average adult's weight fluctuates up to 5 or 6 pounds per day. It all comes down to what and when you eat, drink, exercise, and even sleep. Read on to learn more about how these factors affect the scale and when to weigh yourself for the most accurate results.
Under normal conditions, we're all heavier at the end of the day. Not fatter, heavier. Natural variability means that somebody like me can easily weigh 3-4 kilos (6.6-8.8lbs) more at night time. Which is why it's best for us to step on the scales at the same time of day each time.
Men, it seems, prefer to swathe themselves in heavier garments while women tend to adorn themselves more lightly. Men can lop off nearly 2.5 lbs to account for their clothing while women can only subtract around 2.
The study tracked 50 men and women for an entire year. Every time the participants checked in they were weighed with and without clothes on. The results? Women, on average, wore just over 1.75 pounds of clothing, while men's clothing added just over 2.25 pounds.
"We can weigh 5, 6, 7 pounds more at night than we do first thing in the morning," Hunnes says. Part of that is thanks to all the salt we consume throughout the day; the other part is that we may not have fully digested (and excreted) everything we at and drank that day yet.
If you weigh yourself at night, you're going to weigh more than you actually do, according to Discover Good Nutrition. Weigh yourself first thing the mornings, after your body has had a full night to digest your food. Otherwise, you'll be seeing higher numbers that don't correlate to all of your hard work.
Dehydration causes your body to retain excess water, which can lead to 5 pounds of weight gain overnight (5). When you feel thirsty and drink a lot of fluid at once, you'll absorb the extra fluid quickly and it shows up on the scale within 24 hours.
You've gained muscle.
And here's an often overlooked fact: Muscle tissue is more dense than fat tissue. So as you gain more muscle and lose fat, you change your overall body composition, which can result in a higher weight, but a smaller figure and better health.
Overeating one day will not have much impact on your weight, but it will surely leave you feeling bloated. You can have an extra slice of your favorite cheesecake occasionally, but do not make this your habit. The next day, return to your fitness routine and everything will be fine.
Muscle is denser than fat, and as it is more compact within your body, as you gain muscle mass, you end up looking thinner, no matter your physical weight. So, if you've been doing a lot of strength training lately, it's likely this is the reason that you're looking fantastic but not dropping those numbers.
You may be losing weight and gaining muscle
If you're losing inches but maintaining your weight and you regularly strength train, you may actually be losing fat and gaining muscle. The process of gaining muscle and losing fat at the same time is called body recomposition.
Do you ever wonder why the number on the scale doesn't move after you've made many changes to your diet and lifestyle? When the scale doesn't move, you are losing body fat while gaining muscle. Your weight may stay the same, even as you lose inches, a sign that you're moving in the right direction.
For example, one hair alone can withstand a strain of 3.5 ounces — almost 1/4 pound. Water can affect some properties of your hair. For example, your hair can weigh 12 to 18 percent more when it's wet. Wet hair can also stretch 30 percent longer without damage.
Weigh yourself before you have anything to drink or eat: Weigh yourself ONLY before munching on the first meal of the day, however small it may be. Also remember to not drink any fluids before you hop on the scale. The empty stomach number on the scale is what your true weight is.
On average, a single strand of hair typically weighs around about 0.00015 ounces, or about 0.4 grams. This is much lighter than many people might expect, particularly given how strong and durable our hair can be.