I understand. If you don't have the energy or motivation to exercise here's where to start.
Working out does help with depression but it can feel like the hardest thing in the world to do when you're down. You know the vicious cycle - you don't feel like exercising when you're depressed but you feel worse when you don't. Not moving actually messes up your hormones and makes depression worse - so you're even less likely to feel like it.
So what to do? When you're going through a depressive episode you can pick a tiny habit that you are 100% sure You can complete daily. Pick something so small that I can muster up the energy to do it no matter how I'm feeling. For example - it could be a 5 min stretch routine and/or walk around the block.
What you feel you can stick to will be very unique to you. A 30 min strength training session might be something you can do consistently every day if you're used to doing 2 hours, 4 times a week. Choose what works for you.
Your mission - should you choose to accept it - is -
1. Pick a habit you know 100% you will be able to do for the next 7 days NO MATTER how you're feeling