Falls prevention
Standing on one foot while holding the counter, heel-to-toe walking down a hallway, even just standing up from a chair without your hands. Three or more days a week. This is the one that actually keeps people independent.
My mother is in her nineties and can still get up out of a chair without using her hands. That's not luck, it's practice. My husband and I do a routine most mornings before his blood sugar check, right there by the coffee table. No gym membership, no equipment we had to buy, just floor space and a sturdy chair to hold onto. Here's everything I've picked up about doing this safely, and doing it without spending money you don't have to spend.
You don't need a plan with twelve steps. You need three things done in order, and then you just show up most days.
You don't need to be a fitness person for this. You need a little of each of these, spread across the week.
Standing on one foot while holding the counter, heel-to-toe walking down a hallway, even just standing up from a chair without your hands. Three or more days a week. This is the one that actually keeps people independent.
Chair squats, wall push-ups, a resistance band that costs about eight dollars. Two days a week is enough to matter. Carrying groceries in from the car counts for something too.
A brisk walk around the block, marching in place during a phone call, dancing in the kitchen. Adds up toward a general goal of about 150 minutes a week at a moderate pace.
The simplest gauge is whether you can talk. No heart rate monitor required.
Warming up, cooling down, gentle stretching. Good every single day, no downside.
This is the sweet spot for most people most days. A brisk walk, a light band workout. You should be able to hold a conversation but not sing along to the radio.
Only once you've been cleared for it and have built up a base. Not the starting point, and not necessary to get real benefit.
Most of these I only know because I watched someone else make them, or almost made them myself.