They may be consumed up to the use by date. Unopened deli meats generally keep for two weeks. However, once the package is opened, the use by date is meaningless; the meat should be consumed within 3-5 days. This is because anti-oxidative gases that preserve pre-packaged deli meats escape from the packaging once it is opened. Unopened packaged deli meat can be frozen for one to two months.
Chest soreness that is caused by working out used to be attributed largely to the buildup of lactic acid, which is a waste product created by the muscles when strained.
Because chest pain can be a sign of a heart attack, if the pain is due to heart disease, it is important to seek help and get treatment as quickly as possible. The important causes, typical signs and symptoms, diagnostic tests, and initial treatment of chest pain will be reviewed here. CHEST PAIN CAUSES.