After a bad night’s sleep, the thought of dragging yourself out of bed to go for a run can seem especially unappealing. However, a study has found that exercise becomes even more important if you have insomnia as it offsets the negative health consequences of not getting enough sleep. Sleeping less than six hours a night was shown to significantly increase the likelihood of dying from heart disease, but this risk disappears in people who do plenty of exercise. The study looked at 92,221 adults