"When water molecules escape from your frozen food, it is also possible for oxygen molecules to seep in. The oxygen molecules can dull the color and modify the flavor of your frozen product. Food that has freezer burn is safe to eat, but you may find the texture and taste not to your liking."
Source - https://www.loc.gov/rr/scitech/mysteries/freezerburn.html
Including lifestyle activities in a personal fitness program can be beneficial because it increases the total amount of time spent on fitness activities in a given day without requiring much additional time. For instance, an individual might walk up a flight of steps each day instead of taking the elevator. These types of activities require less commitment than more formal fitness activities and are therefore typically more convenient.
When your muscles are sore it can mean you worked it out, but also can mean other things like straining. If you feel a tight sensation when moving your body. It means you have worked on that area well! :}
U should go see ur doctor first if it’s been 8 months that’s to long and there my be another issue/problem with ur knee