Also called: High body fat; high BMI
Exercise strongly helps
Strength
Carrying more fat than is good for the joints, the heart and the metabolism. The part most programmes get wrong is muscle: dieting without strength training sheds lean mass as well as fat, which lowers metabolism and makes regain almost inevitable.
How common: ~40% obesity and ~73% overweight-or-obese among US adults
What it is
At its simplest this is a long-run energy surplus, but almost nothing about how a person arrives there is simple - appetite, sleep, medication, stress, food environment, genetics and previous dieting all move the dial, and none of them is a character flaw.
The part that matters most for what to do about it is body composition. Weight loss without resistance training typically comes about a quarter from lean tissue. That lost muscle lowers resting energy expenditure and strength, which makes the weight easier to regain and harder to lose next time - the mechanism behind the repeated-diet pattern most people recognise.
What it feels like
- Breathlessness on stairs and hills out of proportion to the effort
- Knees, hips and low back complaining under everyday load
- Tiredness that is not explained by how much sleep you get
- Clothes and seats becoming the daily measure rather than a scale
- A history of losing weight and regaining it, often ending higher than the start
What causes it
Most people have more than one of these at once, and they feed each other. Read the
list looking for the two or three that sound like your week rather than for the one
true answer — the ones that describe you are the ones worth acting on.
- A long, small energy surplus
- It rarely takes a dramatic excess. A hundred surplus calories a day is invisible day to day and is several kilograms a year, which is why it accumulates without any single moment to point at.
- Muscle lost on previous diets
- Each round of dieting without resistance training removes lean mass. Less muscle means lower resting energy expenditure, so the same eating produces a surplus that did not exist before.
- Short and poor sleep
- Sleep restriction reliably raises appetite hormones, increases intake and shifts food choice toward energy-dense options. It is one of the most consistently demonstrated effects in the whole field.
- Sitting for most of the waking day
- The difference between an active and a sedentary day is far more than the gym hour - it is the several hundred calories of standing, walking and fidgeting that a desk job removes.
- Medication
- Antipsychotics, some antidepressants, steroids, insulin, some antiepileptics and beta blockers all cause weight gain in some people. This is a real, measurable effect and worth raising with a prescriber rather than absorbing as a personal failure.
- Stress and its effect on eating
- Sustained stress raises cortisol, disturbs sleep, reduces activity and drives eating for regulation rather than hunger. It attacks the problem from four directions at once.
- Genuine differences in appetite regulation
- Satiety signalling varies substantially between people, and a large part of that is inherited. Two people in the same food environment do not experience the same hunger, which is precisely why willpower is a poor explanatory model.
- An environment engineered for intake
- Energy-dense, highly palatable, cheap and constantly available food is the default rather than the exception. Resisting it is a daily effort that most other generations did not have to make.
- Medical contributors
- Underactive thyroid, polycystic ovary syndrome, Cushing's and some rarer conditions genuinely change energy balance. They are not the usual cause but they are worth excluding, particularly when gain has been rapid or unexplained.
- Menopause and ageing
- Falling oestrogen shifts fat distribution toward the abdomen and muscle mass declines with age. Both change the picture even where eating has not changed at all.
Who tends to get it
- Anyone with a sedentary job, particularly with a long commute
- People who sleep less than about seven hours regularly
- Anyone on a medication known to affect weight
- People with a history of repeated dieting, in whom lean mass may already be low
- Women through the perimenopausal transition
What makes it worse, and what settles it
Makes it worse
- Dieting without any resistance training, which shifts a quarter of the loss onto muscle
- Very low protein intake during weight loss
- Severe restriction, which raises the odds of a rebound
- Poor sleep, which undermines every other effort
- Treating exercise as a way to burn calories rather than as a way to protect muscle
Settles it
- Resistance training two or three times a week throughout any weight loss - this is the single highest-value change
- Enough protein to support that training, which most people under-eat while dieting
- A rate of loss slow enough for muscle to be retained
- Building daily movement outside the gym, which is where most of the energy difference lives
- Sleep, treated as part of the plan rather than as unrelated
What actually helps
The short version: Chronic energy surplus; muscle loss during dieting worsens the metabolic outcome and drives regain
Strength work: Full Body; Gym total body; compound multi-joint lifts 2-4x/week to defend lean mass in a deficit
Stretching: Any - not a driver here
Massage: Not a driver here
Also worth doing: Daily step target; protein intake; NEAT
What the evidence says: Exercise alone produces small weight loss but is the single best predictor of maintained loss and preserves lean mass. Frame it that way, not as a fat-burner.
The names above are the Targets qFIT tracks —
the Muscle Guide explains what each one does, and
Quick Add switches on the Exercises you
already have.
The qFIT routine for this
Ready-made routineWeight, Cholesterol & Metabolic Health
qFIT already has this one built. It runs massage first, then stretching, then
strength — the order that works on a body that is already sore — and every
activity in it carries the reason it is there.
The button below opens your Checklist with this routine already selected, so instead
of your whole list you land on just its Categories, Targets
and Exercises, each with its checkbox, ready to tick as you work through
them.
Have more than one problem? Tick yours under My Problems on
My Profile and your Checklist's Routine list gains
Recommended for my problems — every routine for the problems you picked, merged
into one. Your picks stay private; that filter is the only thing they feed.
Get it checked if…
Rapid unintentional weight loss; exertional chest pain or breathlessness
And whatever the body part: chest pain or unusual breathlessness on
exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and
unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or
one calf that is swollen, warm and painful. Any of those, stop and get assessed.
How it usually goes
Strength and fitness improve within weeks, and the health markers that matter most - blood pressure, blood sugar, lipids, joint pain - often improve before much weight has moved at all. That is worth knowing, because waiting for the scale is what makes people stop. Sustainable loss is slow, and the honest predictor of keeping it off is whether resistance training and daily movement stayed in the picture rather than which diet was used.
Prevalence basis: NHANES; near-identical figures in most high-income countries
Others the same routine covers
These share the Weight, Cholesterol & Metabolic Health routine, so the work is the same. If one of them also
sounds like you, that is a reason to expect more from it, not less.
This is general information, not a diagnosis, and it cannot examine you.
If it matches you, use it to ask better questions of a clinician rather than to replace one.