What is the best exercise to improve sleep?

High-intensity yoga for less than 30 minutes, twice a week, may be the best workout routine for catching high-quality shut-eye, a new study shows. But before people jump on the yoga trend, researchers say more experiments are needed to confirm the study’s findings.

While exercise in general is known to improve sleep, a meta-analysis published July 11 in Sleep and Biological Rhythms presents a broad comparison of exercise routines and their influence on sleep quality. By…