These exercises help prevent and relieve back pain–and tone up your tummy. These exercises help prevent and relieve back pain–and tone up your tummy.

The more tired you feel, the harder exercise can be. That’s why coaches of elite athletes have long known that a shot of caffeine before a training session or competition can improve performance by making it easier to exercise more vigorously with less pain and fatigue. But for an average Joe, does drinking java really give your workout an edge? While the science isn’t solid yet on caffeine’s role as a training aid, the research so far is encouraging. | HEALTH.COM The more tired you feel, the harder exercise can be. That’s why coaches of elite athletes have long known that a shot of caffeine before a training session or competition can improve performance by making it easier to exercise more vigorously with less pain and fatigue. But for an average Joe, does drinking java really give your workout an edge? While the science isn’t solid yet on caffeine’s role as a training aid, the research so far is encouraging. | HEALTH.COM

11 Gross Things That Can Happen If You Don't Shower Right After Working Out 11 Gross Things That Can Happen If You Dont Shower Right After Working Out

The Most Bootylicious Moments in History - 2014 - Iggy Azalea appears in Lopezs Booty video, which takes the cake for most wiggling rears in a four-minute clip. #InStyle The Most Bootylicious Moments in History - 2014 - Iggy Azalea appears in Lopezs Booty video, which takes the cake for most wiggling rears in a four-minute clip. #InStyle

These little-known causes of nausea have nothing to do with what you ate or drank. | Health.com These little-known causes of nausea have nothing to do with what you ate or drank. | Health.com

10-minutes-to firm workout: target your trouble zones like inner thighs, butt, abs, and more with these moves. Each of these moves does double duty, targeting a primary muscle and a secondary area that needs a boost. | Health.com 10-minutes-to firm workout: target your trouble zones like inner thighs, butt, abs, and more with these moves. Each of these moves does double duty, targeting a primary muscle and a secondary area that needs a boost. | Health.com