overweight people and healthcare system issues

Some people believe that more exercise<s style="background-color: rgb(255, 255, 102);">s</s> and sports activities in schools could be a solution for the increasing number of overweight people <s style="background-color: rgb(255, 255, 102);">who their</s> whose issues have overburdened the health care system. Although I agree with this idea, I think governments also need to take some steps to tackle this problem.

Some people believe that more exercise and sports <s>activities</s> in schools could be a solution for the increasing number of obese people of whom their issues are overburdened by the health care system. Although I agree with this idea, I think governments also need to take some steps to tackle this problem.