The first month of lifting if you've never lifted
Federal guidelines ask adults for muscle-strengthening activity on at least 2 days a week, on top of aerobic activity. [1] If you have never lifted, the same guidelines tell inactive people to "start low and go slow": begin at lower intensity and build up how often and how long you do it. [2]
How much strength training do adults need?
The Physical Activity Guidelines for Americans, written by the US Department of Health and Human Services, say adults need at least 150 to 300 minutes of moderate-intensity aerobic activity a week, such as brisk walking, plus muscle-strengthening activity, such as lifting weights or doing push-ups, at least 2 days a week. [1] The full text adds what counts: the activity should be of moderate or greater intensity and work the major muscle groups, which it lists as the legs, hips, back, chest, abdomen, shoulders and arms. [2] Weights, resistance bands, body-weight moves such as push-ups and planks, carrying heavy loads and heavy gardening all count. [2]
The guidelines do not recommend a set amount of time for muscle strengthening, and they say some physical activity is better than none. [2]
One timing note. HHS says a supplement to the second edition, covering steps and muscle-strengthening activity, will be released in 2027. [4] The second edition is still the current guidance. [3] So these are today's numbers, not necessarily the final ones. [4]
Why does lifting matter after 45?
The National Institute on Aging (NIA) reports that muscle mass and strength rise from birth and peak at around 30 to 35 years of age, then decline slowly and linearly at first, and faster after age 65 for women. [5] NIA says that average decline can be substantially slowed by staying active, but that there is no way to fully "stop the clock." [5] It calls the age-related loss of muscle mass, strength and function sarcopenia, and says some forms can affect middle-aged people. [5] NIA-supported researchers have found that strength training can help older adults maintain muscle mass and improve mobility. [5]
The American College of Sports Medicine says in its position stand on older adults that no amount of physical activity can stop biological aging, but regular exercise can minimize the physiological effects of a sedentary lifestyle. [6] That statement is written for older adults, so read it as the direction of travel, not a rule for your age.
Bones come into it too. The Bone Health and Osteoporosis Foundation (BHOF) says the two types of exercise important for keeping bones strong are weight-bearing and muscle-strengthening exercise. [7] ACOG says regular exercise slows bone loss, and that strength training strengthens muscles and bones by resisting against weight such as your own body, an exercise band or handheld weights. [8]
What does a first month of lifting look like?
No federal agency publishes a first-month program, so I will not pretend one exists. What the guidelines do give is a list of muscle areas, a repetition range, and a rule for starting out. The box below turns those into a simple two-day structure and marks which parts are sourced and which are my own suggestion.
A starting structure for weeks 1 to 4 (not a prescription)
Two days a week. The guideline asks for muscle-strengthening on 2 or more days a week. [2] Leaving a day or more between sessions is my suggestion.
One move for each area the guidelines name. Legs and hips, back, chest, shoulders and arms, abdomen. [2] Examples I would use: a sit-to-stand from a chair, a band row, a push-up against a wall or counter, light dumbbells or a band for the shoulders, a plank from the knees. Those choices are mine; push-ups, planks, bands and weights are all activities the guidelines list. [2]
Weeks 1 and 2: one set of 8 to 12 repetitions of each move. The guidelines say one set of 8 to 12 repetitions of each exercise is effective. [2] Learn the movement with very light loads first. Form before weight is my suggestion.
Weeks 3 and 4: change one thing. Add a second set, or a little more weight, not both. The guidelines say 2 or 3 sets may be more effective, and that more weight or more days a week will result in stronger muscles. [2] Changing one thing at a time is my suggestion.
Effort. The guidelines say to work to the point at which it would be difficult to do another repetition. [2] As a beginner, I would reach that point gradually, with your form intact.
Keep walking. NIA researcher Roger Fielding says the best recipe for improving physical function and avoiding disability, in his studies of older adults, is a combination of walking and resistance training. [5] This structure is a starting point to discuss with a clinician, not a plan written for you.
How fast should you add weight?
Slowly, and the guidelines are specific about the principle even though they give no schedule. Inactive people should "start low and go slow," beginning with lower-intensity activity and gradually increasing how often and how long they do it. [2] They should also choose activities that suit their current fitness level. [2] Improvements in muscle strength and endurance are progressive over time, and more weight or more days a week will build stronger muscles. [2] The guidelines do not give a percentage to add each week, and I am not going to invent one.
When to talk to your clinician
The guidelines say people with chronic conditions or symptoms should be under the care of a health care provider, and can consult a health care professional or physical activity specialist about the types and amounts of activity appropriate for them. [2] NIA adds that if you feel general weakness, you should talk with a doctor, because it could be sarcopenia or another medical condition. [5] And if you have osteoporosis or are at risk of breaking a bone, BHOF says certain movements or poses in yoga, Pilates and other forms of exercise may need to be avoided or modified. [7]
Sources
- Office of Disease Prevention and Health Promotion (US Department of Health and Human Services), Top 10 Things to Know About the Second Edition of the Physical Activity Guidelines for Americans. Content last updated November 19, 2025. Retrieved 2026-10-18.
- US Department of Health and Human Services, Physical Activity Guidelines for Americans, 2nd edition (2018): key guidelines for adults, key guidelines for safe physical activity, and Chapter 4 (muscle-strengthening activity). The PDF shows no revision date. Retrieved 2026-10-18.
- Office of Disease Prevention and Health Promotion, Current Guidelines (Physical Activity Guidelines for Americans). Content last updated November 19, 2025. Retrieved 2026-10-18.
- Office of Disease Prevention and Health Promotion, Physical Activity Guidelines for Americans, 2nd edition Supplement: 2027 Steps and Muscle-Strengthening Guidance. Content last updated October 14, 2026. Retrieved 2026-10-18.
- National Institute on Aging, How can strength training build healthier bodies as we age? Dated June 30, 2022. Retrieved 2026-10-18.
- American College of Sports Medicine position stand, Exercise and physical activity for older adults (Chodzko-Zajko et al., Med Sci Sports Exerc 2009; PMID 19516148). Abstract. Retrieved 2026-10-18.
- Bone Health and Osteoporosis Foundation (formerly the National Osteoporosis Foundation), Healthy Bones For Life: Clinician's Guide, Section 9, Exercise. The PDF is marked 2014. Retrieved 2026-10-18.
- American College of Obstetricians and Gynecologists, The Menopause Years (FAQ). Last reviewed December 2025. Retrieved 2026-10-18.
Every statement above was checked against the linked source on October 18, 2026. This article is education, not individual medical advice. Related: How much protein after 45? and Bone loss after menopause.