Training after 40
Your body did not betray you. Your training did not change.
HPHGenetics builds strength training and nutrition around adults over 40, online, with a coach who adjusts the plan as your life and your joints actually behave.
Most of what you have been told about aging and metabolism is wrong. What is true is more useful.
The metabolism story is mostly wrong
You have heard it a hundred times: after 40, your metabolism slows down and the weight comes on no matter what you do. It sells supplements. It is also not what the best data says.
In 2021, researchers published a study in Science using doubly labeled water, the gold standard for measuring energy expenditure in people living normal lives. They looked across the entire human lifespan. Once you adjust for body composition, metabolic rate is essentially flat from about age 20 to age 60. The statistical breakpoint where it starts to decline is 63, and after that it falls by roughly 0.7 percent a year.
So why does the weight come on?
- You carry less muscle than you used to. Muscle is metabolically active. Lose it and your total daily burn drops, even though your metabolism per pound of lean tissue has not changed
- You move less. Desk job, longer commute, kids, knees that complain. It adds up quietly
- Your food environment changed. More eating out, more convenience, more alcohol, less sleep
Every one of those is trainable. That is the actual good news, and it is a more honest answer than blaming your age.
Source: Pontzer H, et al. Daily energy expenditure through the human life course. Science, 2021. One fair caveat: this measured group averages adjusted for lean mass. Your total daily burn can still fall as lean mass and activity fall.
Strength leaves faster than size does
This is the part almost nobody tells you, and it changes what you should train for.
In the Health, Aging and Body Composition study, a large long-term study of adults in their seventies, leg strength declined about three times faster than leg muscle mass. Participants who gained lean mass did not automatically keep their strength.
Those are adults aged 70 to 79, not 45, so do not read those rates as what is happening to you right now. But the direction matters at any age: size and strength are not the same adaptation, and strength is the one that decides whether you can carry the groceries, get off the floor and stay independent.
That is why our programs progress load, not just volume. You are training to get stronger, not to get tired.
Source: Goodpaster BH, et al. J Gerontol A Biol Sci Med Sci, 2006.
Menopause, bone, and honest expectations
If you are in perimenopause or past it, you already know the rules changed. Body composition shifts, bone loss accelerates around the transition, and the approach that worked in your thirties stops paying.
What the evidence supports, plainly:
- Resistance training builds lean mass. In a meta-analysis covering 101 trials and 5,697 postmenopausal women, resistance training added about 0.9 kg of fat-free mass. Real, repeatable, and not a transformation
- Resistance training alone did not significantly reduce fat mass in that analysis. We are telling you that because it is true. Aerobic training was the part that moved fat mass. The defensible approach is strength plus aerobic work plus nutrition you can keep doing
- Bone responds to load. In the LIFTMOR trial, postmenopausal women with low bone density who did supervised heavy resistance and impact training twice a week for eight months gained 2.9 percent bone density at the spine, while the comparison group lost 1.2 percent. Worth knowing: that comparison group was not sitting still, it was doing a low-intensity home program, and it still lost bone
Hormone therapy, bone medication and symptom management are medical decisions. Those belong with your doctor. We handle the training and the food, and we will happily work alongside whatever your clinician has you on.
Sources: Khalafi M, et al. Front Endocrinol, 2023 and Watson SL, et al. J Bone Miner Res, 2018 (LIFTMOR). LIFTMOR used heavy loading at more than 85 percent of a one-rep max under close supervision, which is not where a beginner starts. If you have osteoporosis or a history of fractures, talk to your doctor before loading heavy. That is a real conversation, not a formality.
You probably need more protein than you think
The standard RDA of 0.8 grams per kilogram was set as a minimum to prevent deficiency, and it was derived largely in younger adults. Older muscle is less responsive to a given dose of protein, which means the same steak does less for you at 55 than it did at 25.
The PROT-AGE expert position paper recommends healthy older adults aim for roughly 1.0 to 1.2 grams per kilogram of body weight per day, and importantly, about 25 to 30 grams in a single sitting, because there appears to be a higher per-meal threshold to trigger the same response.
In practice that usually means protein at breakfast, which is the meal most people skip it at entirely.
Source: Bauer J, et al. PROT-AGE Study Group position paper, J Am Med Dir Assoc, 2013. This is expert consensus, not a meta-analysis. If you have kidney disease, your protein target needs to come from your physician or renal dietitian.
What coaching after 40 actually looks like
- Built around your joints, not around a template. You tell your coach what flares up. Knees, lower back, shoulders, wrists, hips. The program routes around it
- Strength first, with load that progresses. Not a circuit designed to make you sweat and leave you sore
- Three days a week is usually enough. The official guideline asks for muscle-strengthening work on 2 or more days covering all major muscle groups, plus 150 to 300 minutes of moderate activity. Most of our clients train 3 days and walk on the others
- Protein and sleep get as much attention as the training, because after 40 they do more of the work
- Balance work when it is warranted, which the guidelines add for adults over 65 and which matters long before that
- Form checks by video. Record a set, your coach sends back corrections. Included on every plan
- A group chat with every other client and a monthly group call, included on every plan. A lot of the people in it are also over 40 and dealing with the same joints, the same schedule and the same decade
Guideline source: Physical Activity Guidelines for Americans, 2nd edition. Note there is no separate official guideline for adults over 40; the adult guideline applies through 64. And in their words, some physical activity is better than none at all.
People who started later than you
- Paul started at 69 and has lost 68 pounds
- Myriam changed her body at 60
- Barb is in her 50s, trains at home with a small amount of equipment, and has lost 85 pounds
- Rebecca is in her 40s and went from 195 to 159 after fad diets, extreme exercise, surgery and GLP-1s had all failed to stick
These are individual results, not guarantees. Everyone starts from a different place. See more client stories.
Tell us what you are working with
Ten short questions about your goals, your week, your equipment and anything we need to train around. A coach reads every answer before you speak to anyone.
Questions people over 40 ask us
Does your metabolism slow down after 40?
Not the way the industry says it does. A large study published in Science measured energy expenditure across the human lifespan and found that, once you adjust for body composition, metabolic rate is essentially flat from about age 20 to age 60. The decline starts closer to 63. What usually changes is how much muscle you carry and how much you move, and both of those are trainable.
Is it too late to build muscle at 50 or 60?
No. Adults in their 50s, 60s and 70s build strength and muscle when they train properly and eat enough protein. What changes is recovery and how quickly you can add load, not whether the adaptation happens. Paul was 69 when he started with us and has lost 68 pounds. Myriam changed her body at 60.
How many days a week should I train after 40?
The US Physical Activity Guidelines ask adults for muscle-strengthening work on 2 or more days a week covering all major muscle groups, plus 150 to 300 minutes of moderate aerobic activity. Most of our clients over 40 train 3 days a week and walk on the others. There is no separate official guideline for people over 40; the adult guideline applies.
How much protein do I need after 40?
More than the standard RDA, which was set as a minimum and derived largely in younger adults. A widely used expert position paper recommends healthy older adults aim for roughly 1.0 to 1.2 grams per kilogram of body weight per day, and about 25 to 30 grams in a single meal, because older muscle needs a bigger dose to respond. If you have kidney disease, your protein target is a conversation for your doctor, not a coach.
Does strength training help with menopause weight gain?
Here is the honest version. In a large meta-analysis, resistance training built lean mass in postmenopausal women but did not by itself significantly reduce fat mass. The combination of resistance and aerobic training, alongside nutrition you can actually sustain, is what the evidence supports. Strength training also has real value for bone, balance and daily function that a scale will never show you. Hormone therapy and symptom management are medical decisions for your doctor.
I have bad knees, a bad back and an old shoulder injury. Can I still train?
Usually yes, with the program built around it. Your coach asks what flares up and picks movements that load the muscle without loading the sore joint. Box squats instead of deep squats, hip thrusts instead of lunges, and so on. If you have a current injury, a recent surgery, or pain your doctor is watching, get cleared first and tell us what they said.
What if I have not trained in twenty years?
Then you are most of our clients. Your coach starts with what you can do now, not what you could do at 25, and adds from there. The first month is about showing up and learning the movements, not proving anything. If you are starting from zero, we wrote what the first weeks of training actually look like.
Do I need a gym?
No. Plenty of our clients over 40 train at home with a couple of dumbbells and a bench. Barb has lost 85 pounds training in her living room. Your program is built around the equipment you actually have.
This page is general education, not medical advice. It does not diagnose anything and it is not a substitute for your doctor. If you have an injury, a medical condition, osteoporosis, or are pregnant, talk with a qualified professional before starting a new training program.