.... sleep is always a problem for me.
https://www.youtube.com/watch?v=rMvwVtlqjTE
^
What I want you to start doing are "air squats"
It's all bodyweight, you don't need special equipment, and you can do them anywhere.
Pavel Tsatsouline has a system called "Greasing The Groove" I don't need you to read the book, but to boil it down, it's breaking down a simple exercise movement, usually a compound movement, across an entire day in small increments. The methodology is that you are able to do something consistently day after day to develop the "skill" for it because you aren't taxing yourself in a massive one hour or two hour workout set that forces you into a longer recovery phase.
For you, it would mean turning this into a game. Every time you leave your house and walk out your front door, you do 10 air squats. Every time you come back, before you go in, you do 10 air squats. Or every time you pass any threshold in your house that you choose- your bedroom door, the kitchen door, get up from your work desk at home, you do 10 air squats.
In the video, the person is going below parallel. That means his glutes are lowering past his knees. I don't need you to be that aggressive to start. The goal is getting to parallel if you can. Where your glutes reach your knee depth. Inhale with shallow breath at the top, hold your breath, focus on tightening your glutes, then go down as your arms raise in front of you. As you come back up, your arms swing back to the side of your hips, then exhale at the top. Focusing on keep your glutes tight will help control your breathing pattern.
Using Greasing The Groove methodology, you could easily do 100-200-300 air squats a day.
Try this for 30 days, you will struggle to start but you will start to feel the difference. Use brightly colored Post It Notes to remind yourself at your "threshold" points.
For example, if I heat something in a microwave, I do air squats the entire time while it's cooking inside. If I'm heating something for four minutes, I am doing air squats for four minutes straight.
The "master cue" to an air squat or any squat is to drive through midfoot. You have to visualize yourself pushing up as if you pressing into the Earth with your midfoot. Using this master cue will help you align your hip drive correctly.
If you like yoga and have a passion for it, that's great. But for general health, you need strength training and compound movements.
This month, it's 10 per set. Next month, it can be 15. Then another month, 20 per set.
After a while, you won't even realize you are doing it. It will become instinctive.
I guarantee you, rock bottom solid, if you do this for 30 days consistently, you will start to see a difference in your strength and your core and your mobility.