I won't talk about my filthy ways because I think it's all been covered, but here are some things that help:
1. Dry shampoo is your friend, there've been times I haven't been able to shower for work but this has helped me
2. Similarly, body sprays can take the edge off the stank if you don't smell fresh, I have a lovely coconut one and it genuinely helps
3. Keep your hair short. As a woman, getting a pixie cut has been a life-saver. Quick-drying, easy to wash, no hairballs in the shower drain etc.
4.If your bed is too difficult to change regularly, you can put a few drops of essential oil on the mattress itself so at least you get a pleasant aroma wafting up
5. Wipes apparently. Some people who can't face a shower wipe themselves strategically.
6. Mouthwash. Or chewing gum. If you can't brush, you can do something to make you feel a little fresher regardless.
7. Keep laundry basket right near bed. Sometimes I don't have the strength to change into pyjamas, but I do have the strength to strenuously contort out of my clothes whilst lying in bed and chuck them in the laundry. Success?
8. In general, just always choose the easiest option, so maybe aerosol deodorant rather than a roll-on. You never know how much convenience your future depressed self will need.
9. Lastly, for me, sometimes I put lipstick on and that helps. Ok, my hair may be a bird's nest and I might be all kinds of gross, but part of me is a femme fatale once again, lol. And then it smears on my face and I end up looking like the Joker. Circle of life.