Moronic Monday 2018-01-15 @ /r/Flexibility

Have a "stupid" question and are afraid to ask it? (Or don't want to make a whole thread for it?) Well, feel free to ask away in this thread! There's no such thing as a stupid question. This is also a great opportunity for the rest of the community to help each other out.

Guidelines:

• As always, read the FAQ to make sure your question isn't answered already.
• If you're looking for the Motivational Month threads from the past, they are all here in our Wiki.
• You can also use the search bar to see if an answer to your question exists already.
• We are not medical professionals. If something hurts and it doesn't go away within a week's rest, see one!

Enjoy!