I have been sedentary for years and I am

Start tonight with 10 minutes, not an hour: put both hand weights on the chair in front of the TV, march on the spot for 2 minutes, then do 2 rounds of 4 moves with a rest between them, and stop when the show ends. Ten minutes you actually repeat beats an hour you abandon.

1) What you tried vs. what to do instead

NHS guidance for adults aged 19–64: at least 2½ hours of moderate activity a week (fast walking, cycling), plus muscle-strengthening on 2 or more days a week working the major muscle groups — legs, hips, back, abdomen, chest, arms and shoulders. It also notes weight-bearing and resistance exercise are particularly important for bone density, and defines weight-bearing as exercise where your feet and legs support your weight. (NHS, Osteoporosis — Prevention, checked 9 Oct 2026.)

So: a short daily walk for the aerobic half, and your hand weights twice a week for the strength half. The weights do the strength job; they are not the whole plan.

2) Tonight's 12-minute set — in front of the TV

Warm-up, 2 minutes: march on the spot, arms easy, talking the whole time.

The 4 moves, 2 rounds. 8–12 of each, slow, with a rest in between. One weight in each hand unless a move says otherwise.

1. Sit to stand — from a sturdy dining chair, no arms if possible, hands off the chair if it wobbles.
2. Row — lean forward a little, one weight per hand, pull the elbows back past the ribs, lower with control.
3. Wall or counter push — hands on a wall or a solid counter, body in one line, lower halfway. A counter is easier than a wall.
4. Heel raises — both hands on the chair back, rise onto the toes, lower slowly.

Round 2, same four. Then 1 minute of easy marching to come down.

Rules that make it safe for years of sedentary starting: breathe out on the effort, never hold your breath or push hard; the weight is light enough that the last 3 reps feel hard but not painful; keep the whole set under 12 minutes; if the weights are too heavy for the first move, do that move with no weight at all.

Warming it out: put the weights by the chair tonight, so Friday needs no decision. Do the set on two days this week — Friday and one other day. On the other days, a 10–15 minute brisk walk; stairs count.

What success looks like in 24 hours: you did the set once, you know which two days this week are your weight days, and nothing hurts or feels off afterwards. That's the whole win. Nothing here promises to fix hot flushes, sleep, or weight — it is the boring base those things sit on.

3) Avoid list

• Do not go back to hour-long sessions. Nothing about an hour is safer for a body that has been sedentary for years; the small repeatable blocks are the point.
• Do not hold your breath, strain, or grunt through a lift, and do not add weight to make it harder. Breath-holding is the one habit that turns a harmless set into a blood-pressure spike.
• Do not add jump, running, or high-impact moves to this plan now. If you want them later, that is a separate decision with a clinician or a class.
• Do not start, stop, or change any hormone therapy, prescription medicine, or supplement because of this plan — and if you want to talk about supplements, ask your prescriber first rather than ordering anything online.
• Do not exercise in a hot room, and do not push through a hot flush that leaves you dizzy — cool room, layers, water within reach.
• Do not copy anything you give the kids, the elder, or a sibling onto yourself or onto them. Doses, equipment, or "it's good for you" reasoning don't transfer.
• Do not add "recovery" powders, detox teas, or mystery anything. Food already at home is the whole nutrition side of this: calcium-rich foods you already buy (dairy, leafy greens, tofu) for bone health, per the same NHS page.

4) Decision tree — stop, and go where

Right now, during or after a set:

• Chest pressure, tightness or ache — especially spreading to an arm, jaw, neck or back, or with sweating, nausea or breathlessness → stop, call your local emergency number now. Do not drive yourself. Say the time it started.
• Suddenly very breathless, or breathless in a way that doesn't settle in a few minutes of rest → stop, call your local emergency number now.
• Fainting, near-fainting, or feeling like you are about to pass out → stop, lie down, call your local emergency number now.
• Sudden weakness or numbness on one side, face droop, slurred or confused speech, sudden vision loss → stop, call your local emergency number now. Note the time you were last completely well — it matters to the crew.
• Sudden worst-ever headache, unlike your usual ones → stop, call your local emergency number now.

Stop the set, sit down, and see a clinician this week (not tonight):

• A hot flush during the set that leaves you dizzy, or a racing or irregular heartbeat you can feel.
• Joint pain that is sharp, or that is still there the next morning and changes how you walk or climb stairs.
• Dizziness every time you stand up, or feeling unsteady.
• Any bleeding after your last period.
• New leaking of urine when you lift, cough or exercise — this is common and treatable, and it is worth asking about rather than hiding.

Before you go past this set, get a clinician's go-ahead if any of these are true:

• You have been told you have osteoporosis, or a heart, lung, or joint condition. NHS advice is to talk to your GP or health specialist before starting a new exercise programme if you have diagnosed osteoporosis.
• You take several regular medicines, or you get breathless climbing one flight of stairs.
• You have been sedentary for years *and* you smoke, or you drink heavily, or you have a close family history of heart disease or breast cancer.

None of this is a diagnosis, and I am not changing any medication — this is a home routine and the boundary where a clinician takes over.

One thing that changes my advice: have you ever been told by a clinician that you have osteoporosis, a heart or joint problem, or that you take regular medicines? That one answer decides whether you start with this exact set or a gentler walking-only week first.

Want me to turn the 12-minute set and the red-flag list into one screenshot-friendly page you can keep on the fridge?