Most medical professionals don’t include environmental information because there are so many environmental factors that affect different people.
Regular exercises are the best way to prevent flexibility issues because it helps keep muscles healthy and in good shape. For that reason, it is not as probable for muscles to get torn down and for people to experiences with flexibility if they work out regularly.
The answers are a smoke detector, a telephone, and a garbage can. The fire extinguisher is an optional thing to have, so you can be super careful. Unless you're talking about a restaurant's kitchen, then you have to have a fire extinguisher because it is a required thing to have.
Hope that helps.
