Sleeping on an Airplane: It’s All about Blood Flow

This week, the I Spy Physiology blog answers a reader question: Why is it hard to sleep upright on an airplane? Having trouble sleeping when traveling on an airplane or by train or car may not be just because of the change in air pressure or the motion of the vehicle. Your circulation—or lack of … Continue reading Sleeping on an Airplane: It’s All about Blood Flow

Why Being an ‘Active Couch Potato’ Is Bad for Your Health

Did you know that even if you exercise regularly, you may be what researchers call an “active couch potato?” Consider this: If you exercise 30 to 45 minutes a day—completing your daily workout all at one time—it is easy to still spend 80 to 90 percent of your waking hours sitting. A study in England … Continue reading Why Being an ‘Active Couch Potato’ Is Bad for Your Health

2018’s Most-read Posts

December is here again, and we’ve tackled another year of physiology facts on the I Spy Physiology blog. This year, we’ve delved into topics ranging from the link between childhood stress and medical problems in adulthood, to how researchers use virtual reality in the classroom to teach physiology, to the many reasons why marriage is … Continue reading 2018’s Most-read Posts

Walk It Out: How Frequent Walking Breaks Help Your Brain

“Sit less, move more.” This message is being increasingly promoted in the world of health and fitness and in society at large and for good reason. The time we spend sitting is directly related to our health. In fact, too much sitting might even be harmful to people who exercise regularly. Sitting continuously for three … Continue reading Walk It Out: How Frequent Walking Breaks Help Your Brain

Keeping the Juices Flowing with Beets

With the new year upon us, many people are setting new goals for themselves related to improving their health or focusing on career-related goals. If establishing better exercise and nutrition habits are part of your quest to attain optimal health and productivity in 2018, you are not alone. New gym memberships are likely to rise … Continue reading Keeping the Juices Flowing with Beets

Are Cross-Country Skiers Premier Athletes?

  With winter upon us, it is a good reminder that cold weather is not an excuse for inactivity. Athletes from cold-weather climates, such as the Nordic countries, are not content to stay indoors during winter. In fact, cross-country skiers from these colder climates might be considered the premier human aerobic athletes. Although some picture … Continue reading Are Cross-Country Skiers Premier Athletes?