Tempur is a crazy expensive brand, but does wonders in my case: https://www.amazon.es/Tempur-0855aj-Cojín-Asiento/dp/B001KALM3I Alternatively, the one below has also helped me a lot: https://amzn.eu/d/bUeqLi6 All in all, as someone said earlier, it all varies from one person to another, but there you have my two cents

Thanks a million NineMileTower! I’ll try and find the book and start from there!

Could you please provide any links or book recommendations for an absolute beginner? I’ve tried to approach it in different ways (apps mostly), but never actually manage to make it work and would love to learn what worked for you. Thanks!!