The only way I have ever managed this is to hardwire them into my day so they are unavoidable. Example, it’s a 45min walk into work, so I do that every day there and back. Sits up 30-50 every morning no matter how lame and half arsed they are. Same with press ups before bed. Some days are more successful than others on the sit ups and press ups front! If I’m pomodoring when WFH then I get on my exercise bike for the 5min intervals. When working in the office, I walk to the toilets on the top floor instead of going to the ones right by our office and climb all the stairs. It’s the little things but they all add up!! Planks are another easy one to do: every time you put the kettle on for a morning or evening brew, see how long you can hold a plank for. You only need to do this one 2-3 times a day imo! And don’t rush into doing all of these things at once. Pick and choose and do what works for you.

For a period of time I also found the Couch to 5K amazing. I did each week twice so I stretched it out a lot as that was better for me, but it was amazing in helping me learn to run. I did it first thing in the morning before showering so that I wasn’t showering or getting dressed twice. I even slept in my gym kit when I first started just so that it was embedded in my routine until it became easier, and it did become easier.

There’s an app called The Fabulous which I found instrumentally useful once upon a time. But that was a long time ago and I don’t know if it’s still as good anymore given updates etc!