Tag Archives: Willpower

Wanna Lose Weight? Get Some Sleep!

There was some research published within the last year that you might be particularly interested in, should you be in the middle of or about to go on a diet (or you’re interested in your health in general):

This article provides an integrative review of the mechanisms by which sleep problems contribute to unhealthy food intake. Biological, cognitive, emotional, and behavioral mechanisms all underlie this relationship.

When I first came across this headline — the less you sleep, the more you eat — immediately, I was interested. After reading the source article (which I quoted from above), I’m heartened by the possibilities for progress in this area.

Naturally, the food we eat has an effect on how we sleep, but the insight that the fewer hours of sleep we get having an effect on how much we eat, is really important. While anecdotal, I’ve experienced this phenomenon firsthand. If I find myself up past my “bedtime,” I almost always am hungry. And because it’s late at night, my executive function is impaired. Put differently, my ability to make good choices might be compromised. In this case, a good choice would be to not eat a bag of chips or a tub of ice cream (or anything sugary, for that matter). A good choice might even be to reach for a handful of nuts or maybe an apple.

The thing that I wanted to mention in conjunction with this research is my suspicion that there’s a cumulative effect. If you stay up late and then pig out on snacks too close to bedtime, invariably, you’ll probably be waking up with less sleep than you need. As a result, your executive functioning (willpower, decision-making, etc.), will be impaired for the duration of the day. By the time you get to the end of the day, you may find yourself more tired than usual such that when it gets to the time when you’d rather go to bed, you might prefer to “reward” yourself or (decompress) by eating some sweets and staying up late… and then it all starts over again the next day. Once you’re out of balance, Newton’s laws have a way of keeping you there.

This reminds me of something I shared a few years ago about Aikido:

One of the exercises we would often do to practice this sense of blending involved our partner (or partners as it was usually in groups of three or more!) to approach us as if they were attacking us. It was our job to then move out of the way, whilst staying centered. The tempo of this exercise usually started out really slow (intentionally). Though, as time passed, our partners would then speed up. You can imagine how it might be challenging to stay centered in this kind of an activity.

During these times of practice, I remember having a bit of an epiphany.

As my partner would approach me and I would step out of the way, I noticed that the quicker (and the more out of balance!) I was, the more out of balance I would be when stepping out of the way for the next partner who was approaching. Think about that for a second: as I stepped out of the way of one partner and I was off-balance, I was that much more off-balance when stepping out of the way for the next partner. It’s almost akin to the Bullwhip Effect.

This idea of eating “after hours” seems to be a mirror image of the off-balance I experienced during the Aikido exercise. So, if you find yourself on the cusp of a diet, I suggest you consider setting (and keeping!) a strict bedtime for yourself. If you’re curious about how to start this new habit, I strongly suggest Duhigg’s book: The Power of Habit.

ResearchBlogging.orgLundahl A, & Nelson TD (2015). Sleep and food intake: A multisystem review of mechanisms in children and adults Journal of Health Psychology : 10.1177/1359105315573427

More Scientific Evidence That Beliefs Affect Biology

If you’ve been following me since I started writing on the internet a couple of years ago, you know that I have a certain soft spot for the power of belief (sampling: here, here, here, and here). I understand that many folks are still leery of that phrase, but when you couch it in the context of the “placebo effect,” it’s amazing how many people begin to accept it as a thing.

Depending upon your philosophical bent, you may believe that willpower is a depletable resource. You certainly wouldn’t be alone in that thought, as President Obama seems to subscribe to this point of view. There are also those who believe that willpower is not a limited resource. So, which one is it? A simple question without a simple answer. It’s important to remember that depending upon from which point we begin, we may be less inclined to believe the other side of the story (remember the confirmation bias?) As much as possible, it’s important to try to take in new information with an open mind. With that being said, (regardless of where you stand), try to examine the following study with an objective and critical eye.

…following a demanding task, only people who view willpower as limited and easily depleted (a limited resource theory) exhibited improved self-control after sugar consumption. In contrast, people who view willpower as plentiful (a nonlimited resource theory) showed no benefits from glucose—they exhibited high levels of self-control performance with or without sugar boosts. Additionally, creating beliefs about glucose ingestion (experiment 3) did not have the same effect as ingesting glucose for those with a limited resource theory.

When I read this, my first thought was, as the title suggests, more evidence that our beliefs can affect our biology (see: Biology of Belief). Of course, I understand if some folks have a hard time jumping on board with this, so, like I said, couching it in the language of the “placebo effect” seems to make it more palatable.

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After reading this, I’d encourage you to follow-through with application. That is, now that you have this knowledge, apply it to your own life. Test it out. See what works for you. Maybe you used to believe that willpower was a limited resource, but after reading this, think the opposite. It’s certainly worth taking a chance, right?