Please choose the correct ending to complete the given sentence: Health: [header] How to deal with a knee sprain [title] Rest your knee for the first 48 hours after injury. [step] Rest is the first and most important measure for knee sprain. Rest will not only decrease pain but can also prevent further injury to the knee.

Ending1: [substeps] Take days off from work, and rest will replenish your strength. Ice will help to reduce swelling and strain. Ending2: Consider the use of crutches to keep the weight off your injured knee. [substeps] However, many doctors say that you should actually not keep your injured knee immobile for too long. Ending3: [substeps] If you have a knee injury, consider sleeping in an inactive position or going to bed in a recliner. If you have recently been injured, try sleeping while the wound is healing. Ending4: Rest will help to reduce the swelling and increase circulation to the area. [substeps] You should also keep your leg elevated so that it won't grind against you.

Answer format: ending1/ending2/ending3/ending4