Adjusting your body fat thermostat

Just like a thermostat in a house, your body has a sort of ‘set point’ for body fat that it prefers. The human body likes to stay pretty much the same given the same environment and external stimulus. That means that if you eat the same things, and exercise (or not) the same amount, your body likes to maintain itself where it is for the most part. Since your body is a stimulus response device, it simply responds to the life you lead. So if you start to go for a walk every day, your body will adapt for a short time, and then stop adapting once it gets proficient at walking that far, that often because it has now adapted to that change, and needs not adapt any further.

With weight gain and lack of exercise, the body also adapts, and this time, it turns the thermostat in a direction you may not like; as you stay sedentary, the body gets rid of muscle, making your body less efficient at burning fuel and resultantly more overweight. It does this, because sitting around does not require muscle, so the body gets rid of what it doesn’t need. You may wonder why it doesn’t get rid of fat, but that’s different. Fat is inert, it doesn’t actually ‘do’ anything. Fat is a result of eating too much, and moving too little.

Getting back to the thermostat, what I wanted to point out, is the yo-yo effect of losing weight and putting it back on again because your body (and your lifestyle) was comfortable where it was. More often than I would like to see, people work out really hard, reduce some body fat, get a great result, and then relax and bounce right back up to where they were before. What happens is that the body returns itself to its previous comfort zone, or ‘set point’; your default thermostat setting. Let’s say your body was ‘set’ for 35% body fat (which isn’t permanent by the way, it’s just what your body is used to), and you work out really hard and eat well so that you get down to 20%. Great! Now, if you slack off on the diet and exercise right after you get there, your body will yank you right back to 35% because it is still used to that level.

What you want to do is this: Get yourself to the percentage you want or can achieve using exercise, good nutrition, rest and plenty of water. Let’s say 20% body fat. Then, you need to continue to work out consistently and eat well so that you maintain that percentage for an extended period of time and this will ‘reset’ your thermostat! If you have been heavy a long time, that might mean you have to stay at 20% for two or three years to reset your new percentage. If you have been fit for many years and just recently let yourself go, it might only take six months to reset your body fat thermostat. The point is, if you change in a short period of time and then relax, you will yo-yo back to your set point. If you change and hold for a period of time, then your body will adjust to your new set point. Once you have the new set point locked in, your body will comfortably stay there with only maintenance efforts required.

I like to think of it as a plane taking off: Full throttle, full flaps and total effort for take off, and then once cruising altitude is reached, the pilot can throttle back and maintain altitude with less effort. By comparison, if the pilot were to go full throttle, take off, reach altitude, and then shut the engines off, the result would not be good. If you think about it, that’s what most people do: work hard for January, February and March, then figure ‘hey, I made it! Time to relax and stop working out for a while’, and before you know it, they are right back where they started or worse. To make matters worse, now they are disheartened and upset with themselves. My body fat thermostat used to be set at over 25%. I reduced it to 7% (which was a pretty nice number, but temporary) and then held it at 14% for a few years. Now I can coast for periods of time and re-intensify again and all the while, my body sits in that 12% to 14% range without too much trouble; my new setting. I do notice though, that as I age, I do need to be more aware of my body fat and exercise at age 42, than I did at 32.

It’s key to understand that if it took you 15 years to get overweight, it will take at least a few years to stay fit. Don’t give up, hang in there and change your thermostat setting.

Scott McDermott is a personal trainer and owner of Best Body Fitness in Sylvan Lake. He can be reached at 403-887-7667 or check out for more information.

Just Posted

City council supports $25,000 for Downtown Community Development Committee

Funding supports stakeholders in developing programs enhancing downtown safety

Red Deer’s Gord Bontje gives $500,000 to A Better World

Co-owner of Laebon Homes gives the gift to celebrate 60th birthday

Tyler Steenbergen etches his name into Canadian hockey history

Sylvan Lake native scores huge tournament-winner at World Juniors

WATCH: Red Deer Entertainment Awards honours Red Deer’s burgeoning talent

The awards looks to become more inclusive of the entire entertainment scene in year three

JoJo Mason heads to Red Deer’s Bo’s Jan. 29th

Mason will be performing tunes from his debut album Both Sides Of The Bar

Red Deerians can enjoy free skating Jan. 13th at the new Servus Arena

The official opening of the Servus Arena takes place this weekend

Ontario man charged with selling Canadian’s usernames and passwords

Ontario man ran site that peddled billions of pieces of personal data: RCMP

Hawaii missile-alert mistake feeds doubts about a real emergency

A push alert that warned of an incoming ballistic missile to Hawaii and sent residents into a full-blown panic was a mistake

Sears Canada closes its final stores

The long-time staple of Canada’s retail landscape declared bankruptcy last year

‘Mega trends’ set to alter economy, society, security

A top-secret document by Canada’s spy agency explores the so-called “mega trends” on its radar

Chronic pain patients need options beyond opioids: B.C. advocate

People who live with chronic pain need options beyond prescription opioids, and it’s up to the BC government to provide more services

East coast begins massive cleanup after downpours knock out roads, power

Heavy rain flooded the area on Saturday floating large ice onto the road and dropping temperatures then froze the water overnight into Sunday morning.

Comedian Aziz Ansari responds to allegations

Ansari has responded to allegations of sexual misconduct by a woman he dated in 2017

North Korean orchestra, maybe joint hockey team at Olympics

Officials from the Koreas met Monday to work out details about North Korea’s plan to send an art troupe to the South during next month’s Winter Olympics

Most Read