Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to work out at the beach [title] Walk barefoot in the sand. [step] There's nothing better than going for a nice long walk on the beach. Even a leisurely walk can offer a great workout when you're not wearing any shoes.

Ending1: You can even go for a jog or paddle to get some fresh air into your lungs. [substeps] Beach workouts that start with jogging or rowing are great for people with mobility difficulties. Ending2: [substeps] Walking is one the of the oldest forms of exercise. It's a low-impact and low-intensity exercise that many people can perform regardless of their fitness level. Ending3: It can also help get you moving along the beach, whether you prefer walking or jogging. [substeps] Sunbathing on the beach is a great way to burn calories while exercising, as the sun is drying out your body. Ending4: It's not hard to cut out some of the pollution from the surrounding ocean by walking barefoot in the sand. [title] Grab some sunscreen at the beach.

Answer format: ending1/ending2/ending3/ending4