Read the text and answer the question.

Many people today can’t imagine their lives without gadgets. If we don’t have our smartphones with us, we feel lost. Gadgets help us stay in touch, do our work, and even entertain ourselves. If you use a phone late at night, you won’t sleep well. Also, if a child spends too much time playing on a tablet, he often becomes tired and unfocused.
Some people believe that if you use smartwatches, they help you stay healthy. For example, if you walk a lot during the day, your watch shows how many steps you’ve taken. If your gadget breaks, you can usually get it repaired or replaced. But if you don’t look after it, it won’t last long.

What is one health benefit of smartwatches mentioned in the text?

• They help you count calories.
• They tell you what to eat.
• They track your physical activity.
• They make you go to the gym.