Stay hydrated. Water, juice, clear broth or warm lemon water with honey helps loosen congestion and prevents dehydration.
Rest. Your body needs rest to heal.
Try rubbing Vick cream or inhaling it.
If you are a smoker quit smoking. Eat three meals a day, doesn't mean you have to eat a lot. Eat alot of vegetables and fruits - at least 1/4 cup worth a day. Avoid processed/canned fruits as they most likely added sugar to it. Exercise daily at least half an hour a day. Stay hygienic. Eat more proteins than junk food. Lessen the amount of snacks a day to 1-2 each should be 100 cals or below. Avoid eating a lot of carbs as it can raise insulin and make you feel hungry often.
It should be C. the depth for a compression for a 13 year old is 1 1/2- 2 inches