It could be physically, mentally or in some cases spiritually
Stand on one leg whilst brushing your teeth
Shower
Create a sleep schedule and stick to it religiously. Drink more water.
Sing to yourself. You can have a much wider vocal range with just a little bit of practice. It doesn’t have to be anything challenging, even a simple “row row row your boat” is already a nice exercise.
Personally I find it very soothing and it helps me focus when I’m doing something on my own. Plus I love how my voice can sound when I put in a little effort :)
I sing to my dog when I get his food ready. I’m almost certain he thinks I’m a weirdo appreciates it
Read for 30 minutes before sleep. Not just articles, but a real, paper-bound book. Helps with sleep, learning, and reading comprehension in the future.
This combined with the other guy’s “get a proper night’s rest” is a tough one. I always try to read for a half hour, but end up getting absorbed and reading for 1 1/2 to 2 hours. I think I need to start reading drier books.