I am constantly being bombarded with what I should and shouldn't do especially as it pertains to warm ups. To some, they seem to be one of the most critical parts of a workout for injury prevention, while others may argue that they are completely useless. Though this will always remain a highly controversial topic, I found an article that I think offers great insight on some myths with regards to warm-ups specifically.
Some key questions answered in the article below:
Are warm-ups optional?
What muscle groups should I focus on warming-up? Does it need to be full-body or just the muscle groups of focus for the day's workout?
Addressing the idea of flexibility - Does your level of flexibility change your need to warm-up?