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.
What Causes Chest Pain? Chest pain is a common symptom of many heart problems, including: Coronary artery disease, which happens when cholesterol builds up on the walls of your arteries. Heart attack, which happens when blood flow to your heart is blocked and its cells canât get the blood and oxygen they need to pump. Chest pain is a very common symptom; if you think you or someone else is having a heart attack, call 9-1-1 right away. Heart rhythm problems, where your heart beats too fast, too slow, or in an irregular way. Heart valve problems, which can happen when your valves become narrow or leak.