you wrote that you fear to become a couch potato in these lockdown times, and I can understand that very well. But...
To stay fit you have to eat well.
I eat each day what Gaylord Hauser called so appropriately "Sunshine Salad".
I am a big fan of late Mr. Hauser (though "big" might not be the right word 😀) - but also a bit lazy: To cut all these carrots, peppers, courgettes, cucumbers, radishes and "all you can eat"! is Zen, meditative - but also a bit of a nuisance, sometimes.
"Sometimes" begins around lunchtime.
So here my lockdown rule number 3:
I do that in the morning, right after breakfast - because I know myself pretty well: around lunchtime a mysterious lethargy sets in - I just don't do it!
So I have to outwit myself.
I take the marvellous glas bowl (you see: it has a lid!), cut all the vegetables into pieces, put the lid on, back to the fridge (I know that I will lose some vitamins on that short run - but honestly: who wants to be perfect? And better 2/3 of all those vitamins than none at all!)
So at lunchtime I only have to pick the salad to pieces, add pumpkin seed and feta cheese, and my homemade salad dressing
(If you want to try it: 1 Tbsp Balsamico vinegar, 1 Tbsp Maple sirup, 2 Tbsp Olive Oil, a little dollop of Dijon mustard, salt and freshly ground black pepper, and, if you have, some herbs - lovely - it is the maple sirup that does it...) And always remember:
"Vinegar like a scrooge, oil like a squanderer"
Stay healthy, dear friend - and look after yourself!