For today’s Dear Mark, I’m answering a bunch of your questions rapid fire-style. First up, I discuss why a person might experience nausea after breaking a 24 hour fast with a meal. Second, I explore some pushup alternatives for a guy with terrible thumb arthritis. Third, I explain the importance of chewing for jaw development, dental health, and digestion, and for the last three, I give my take on sour cherry juice as a health supplement, yacon syrup as a Primal sweetener, and middle distance running as an acceptable form of exercise.
For today’s edition of Dear Mark, I discuss the connection – if one even exists – between cruciferous vegetables (and their goitrogens) and thyroid function. A theoretical interaction exists, but should this impact your decision to eat steamed broccoli? Next, I explain why I recommend one, maybe two days of sprinting a week, in contrast to the exercise studies that often use 3 or 4 days/week sprinting programs to great success. Then, I give a few tips for a person wondering about getting sufficient sources of Primal protein while on an Orthodox Lent fast. And finally, I explore the potential health effects of saunas.
Sprinting is a powerful asset to any training program. It’s brief and effective and long-lasting and reverberates throughout multiple aspects of health and performance. If you sprint regularly, you’ll likely improve your body composition, strength and fitness levels, metabolic flexibility, stamina, and explosiveness. Since sprinting is “going as fast as you can,” it’s infinitely and instantly scalable to your ability level. Anyone who can sprint but does not is making a huge mistake.
However, with great power comes great responsibility. You have to do it right. Sprinting actually isn’t very dangerous compared to other athletic pursuits. You’re more liable to get injured playing a team sport, where you’re responding quickly to unpredictable changes in the game, moving laterally and vertically, diving and leaping for balls or discs, jostling for position. Sprinting is linear, straightforward. You go from point A to point B. However, the very thing that makes sprinting work so well – the fact that it represents the highest intensity your body can muster – can lead to injury if you’re not prepared.
A couple weeks ago, I gave you 17 reasons why you should walk more this year, citing dozens of studies in my attempt to convince you that walking is a healthy, effective endeavor for everyone and anyone. But it’s not the only thing you should be doing if you can help it. If you have the ability, I strongly believe that you should also be sprinting – at least (and maybe at most) once a week. The effects of regular sprinting on your health, your body composition, your fitness, your strength, and your susceptibility to disease are so impressive that it’d be foolish not to. I’ve said it before and even enshrined it in the Primal Laws to accentuate its importance, but here it is again: you should sprint more this year.
It’d be nice if regular activity was woven into our daily lives so that we could stay lean, strong, and fit without really thinking about it, but that’s not the world most of us live in. We have to set aside time to move our bodies. But, as I always say, this doesn’t mean we have to exercise atop a conveyor belt with a TV in front of it doing everything we can to forget that we’re even exercising in the first place. It doesn’t mean the workouts have to take an hour to complete. And it certainly doesn’t mean you need a gym to get in some good activity. That’s why I started writing the Workouts of the Week, a compendium of fun, effective, varied workouts for you to try. Readers still visit the archives to shake up their routines, so be sure to check them out if you’re in the market.
Today, I add ten additional fast but effective workouts to the list.
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