Please choose the correct ending to complete the given sentence: Health: [header] How to safely strengthen hamstrings after an injury [title] Visit your doctor. [step] Even if you don't believe your injury is severe you will want to visit with your doctor. Your doctor will be able to accurately gauge the severity of your injury, offer treatment, and get you started towards a quick recovery.

Ending1: [title] Understand what an ankle splint is. [step] Most injuries to the knee, foot, or leg can be treated with an ankle splint. Ending2: Your doctor will also be able to help decide whether or not surgery is needed. [substeps] For example, if your injury was caused by a car accident, then your doctor may recommend surgery. Ending3: If you have a hamstring injury visit your doctor before beginning any treatment or recovery exercise regime. [substeps] There are three grades of hamstring injury. Ending4: [substeps] You doctor may recommend you rest a few days before such a visit. For instance, after an exercise class, you might say, " i'm not particularly sore after the class.

Answer format: ending1/ending2/ending3/ending4