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How I Lost 40 Pounds in One Month

One woman claims that fasting helped her lose 10 pounds a week.

Keisha (@kickweightwithkeisha) is a TikTok influencer and weight loss coach who lost 100 pounds "naturally" and shares about all the changes she made to her lifestyle to achieve success. In a viral video she reveals her hack for losing 40 pounds in one month. The Diet Diva, Tara Collingwood, MS, RDN, CSSD, LD/N, ACSM-CPT, a Board Certified Sports Dietitian, also weighed in on her methods. 

Week One: Fast for 16 Hours

@kickweightwithkeisha #rapidweightloss #kickweightwithkeisha #fasting #weightloss #keto #lowcarb @Kick Weight With Keisha @Kick Weight With Keisha ♬ You (feat. Bryson Tiller) – Lola Brooke

During week one, there are a few rules. The first is, "you're eating within an eight hour window time frame," she says. This is referred to as the 16-8 intermittent fasting method. 

Week One: Eat Two Meals


During the eight hour period, "you're only going to eat two meals," she explains. Later on she explains your meals should consist of "six to eight ounces of protein, large amounts of low carb vegetables, and some healthy fats per meal."

Related: 5 Ways You Might Be Sabotaging Your Weight Loss Without Even Knowing It

Week One: Protein Shake with Each Meal

Various Protein sport shake and powder. Fitness food and drink.

"And you're going to have your one protein shake each meal," she says. "Save the protein shake until you feel like you need a snack or you want something sweet, or save the protein shake for those types of moments. When you feel like you're craving something, then go ahead and drink that protein shake."

Week Two: First Day, Eat Two Meals

Romantic couple is cooking on kitchen. Handsome man and attractive young woman are having fun together while making salad. Healthy lifestyle concept.

The second week "you're going to do the same thing that you did on week one, but now we're just going to be doing alternate days," she says. "So day one, you're going to do the same thing.
Your two meals, your one protein shake."

Week Two: Second Day, Eat One Meal and Have One Protein Shake

Close up of women with measuring scoop of whey protein and shaker bottle, preparing protein shake.

"Day two, you're going to do one meal, one protein shake," she continues. 

Week Two: Alternate Between These


"Day three, two meals, one protein shake. Day four, one meal, one protein shake," she says. "So every other day you're switching it up. And this is good because it's going to help trick your body. It helps confuse your body. So when you are always worried about, 'Am I going to hit a plateau?' Guys, if you're constantly doing something different, it makes it hard for you to hit a plateau."

Related: Fitness Guru Shows Off Before-and-After Body to Prove Instagram Isn't Realty

RDN Says: This Diet Is Not Sustainable


"40 pounds in one month is not normal, healthy, or sustainable," comments Collingwood, pointing out that it would equate to 10 pounds per week.  "You are likely losing a lot of water and muscle weight along with some fat if you are losing weight that quickly. Plus whatever you are doing is not a lifestyle, sustainable change. It is likely going to rebound and gain the weight back because of the unsustainable nature of the weight loss."

Her Initial Daily Diet Is Healthy

Salmon fillet. Slices of fresh raw salmon fish on ice

She also says that she is "not a huge fan of 16/8 but I am not opposed to it for people who want to try it," she says. However, what Keisha describes, (6-8 ounces protein, veggies, healthy fats, protein shake) is likely about 1,400 calories total. "This should kick start some weight loss and is not too unbalanced, although I would like to see more like 5-6 ounces of meat and some high quality whole grain or beans," Collingwood notes. 

Related: Stop Doing This 1 Mistake If You Want to Lose Weight

However, After the First Week, the Body Will Go Into "Starvation Mode"

Rear View Of A Confused Woman Looking In Open Refrigerator At Home

However, once you get past week one and drop down to one meal per day and one protein shake, "now we are really into very low calories that are not sustainable or healthy. You aren't getting enough of anything for good health," says Collingwood. "Even if you alternate days with 1 meal then 2 meals, etc. you are still going to lower your metabolism and cause your body to go into starvation mode and will likely plateau. Once you eat normally again, you will regain at least some of the weight. And this is not sustainable for life to stay on it forever if you want to have a social life or have good overall health."

💪🔥Body Booster: Try to avoid drastic diets that promise quick weight loss and instead, make sustainable lifestyle changes – your likelihood of losing weight and keeping it off is much higher. 

Leah Groth
Leah Groth has decades of experience covering all things health, wellness and fitness related. Read more