Some of the work outs I do include pull-ups in the backyard on the swingset, push-ups, various versions of crunches, I go for walks, I lift myself up on my chair's arms, jumping jacks, I push my dad around in his wheelchair, and I do hindu squats. Hindu squats are one of the best exercises for your legs, but I'd only recommend doing a small amount of them at first. They can really wear your legs out, and it's one of those work outs you won't really feel until the next day. So you gotta get a feel for what they do to you before you really start doing them.
I recently got a punching bag and speed bag set up in my house. When punching a punching bag it's best to use your hips and not just flail your arms. You're a lot stronger using your whole body than a single part. Some techniques require just (or mostly) your arms though, it all depends on your situation. Speed bags on the other hand just use your arms, they're more of a cardio workout tool than anything.
Stretching is very important to do before workouts, if you don't stretch then you're much more likely to hurt yourself. One of the best ways to stretch is to do yoga, and it's one of the only ways I know of to truly stretch out certain parts of your body like your neck, back, and so on. Yoga also helps better your posture and form, which is important for many work outs.
Proper breathing is important to lasting long during workouts, you gotta get air dude. One of the most common methods for breathing during working out is to simply breath in through your nose and out through your mouth. Yoga also comes in incredibly handy for training your body when it comes to breathing. There's many different yogic breathing methods, many of which are helpful to your health and fitness in many different ways.
Speaking on juicing, a beet juice is one of the best things you can drink before a workout. It's used a lot by runners, and it massively amplifies your endurance. It's best to mix the beet with carrots, celery, chard, ginger, parsley, and whatever fruits you'd like. I like to use watermelon, apple, lemon, blackberries, and strawberries in my juice. Fruits provide a lot of natural energy to you among many other useful nutrients; don't let their deliciousness fool you, for they are also nutritious. Just remember don't drink pure beet juice by itself, that can be harmful.

Lastly remember to rest and recover. When you're done working out get lots of protein. Meat, protein shakes, kale, broccoli, nuts, whatever. Always remember to have some days where you aren't working out so your body has time to rebuild muscles. When you work out you're tearing your muscles, and you need to give them time to mend if you really want to get stronger.