Ana tip
Cleaning.
Yes, I am serious. Clean as much as you can, as often as you can. Why? It burns actually a LOT of calories (it’s hella exhausting), and attracts a lot less attention than secretly working out. If your parents/roommates/whatever ask why you’re suddenly cleaning so much, just say you’re tired of living in filth.
What you can do: literally everything. Sweep your floor, hell, sweep your entire goddamn house or appartment. Mop the floor. Make your bed. Clean your windows. Remove the dust from your shelves. Clean out your cupboards. Clean the bathroom. Remove every single speck of dirt and dust from the sink, the bathtub, the washing machine, the mirror, EVERYTHING. Wash the curtains and carpets and pillows and blankets. Do the laundry. Clean the dishes, your kitchen, the fridge, the oven, the microwave, the sink, and whatever else there is. There are ways EVERYTHING can be cleaned. If you already cleaned everything, then rearrange shit. Take every single book from your bookshelf and put them back in another order. If they are a bit dusty or dirty, clean them up a bit. Also, you can move around your furniture, and if someone asks what the hell you’re doing, explain that you are tired of the way your room looks.
There are ENDLESS possibilities to get moving and burning lots of calories without anyone getting suspicious. Be creative