False. Vaccinations work by exposing you to small amounts of the disease so that your body can produce antibodies therefore becoming somewhat immune to that disease. They basically boost your bodies defense system for what ever you are being vaccinated for.
You are suppose to warm up for 30min then start your work out
Yes it is very hard obtain it
Exercising burns fat, and gets you more sleep. Not only that, but
exercising expands muscles, and is just an overall healthier lifestyle.
I hope that answered your question :)