A pain in the shin—or “shin splints”—strikes many exercisers, from runners to ballerinas to military recruits. Being out of shape or having a previous leg injury can increase your risk. What helps? Suggestions of preventive remedies abound, but studies support only one: Wear shock-absorbing inserts in your shoes.

Medicine and Science in Sports and Exercise

 In some people with asthma, physical activity can trigger an attack. But choosing a different time of day to exercise may help. A study of asthma patients showed that bronchial spasms were less likely to occur during a 7 a.m. workout compared to a 6 p.m. session.

Journal of Allergy and Clinical Immunology

 Want to get more out of your walk? Add walking poles to your workout. In one study, adults who strode at their regular pace while using walking poles burned more calories without more effort. The poles also add stability—a helpful feature for older adults or those who have difficulty with balance.

Research Quarterly for Exercise and Sport