Amanda MacMillan

Author's Bio

Amanda MacMillan is a Brooklyn, New York–based freelance writer, triathlete, and health blogger for self.com.

Is It Okay to Gain Weight During the Holidays?

I'm a runner coming off my competitive season, and I've been super vigilant about watching my weight. Is there anything wrong with gaining a few pounds over the holidays?

Should I Worry about My Irregular Heartbeat?

Unless that flip-flop feeling is accompanied by chest pain, dizziness, or fainting, an occasional heart palpitation is probably nothing to worry about—especially in young, healthy athletes and frequent exercisers.

How Clean Must My Gym Be, Legally?

When it comes to a fitness club's cleanliness, there are very few rules—at least as far as legal responsibilities go. Here's how to tell if yours is up to snuff, and what you can do to avoid harmful germs.

Can I Use Halloween Candy to Fuel My Training?

Your workout snack is totally your call—successful athletes have been kicking ass on all types of fuel as far back as we can tell. So whether it's Gu or Mr. Goodbar that you take down on mile 12 is your call.

How Can Exercise Help Me Stay Focused at Work?

We won't insult your intelligence by rehashing the general cognitive benefits of getting blood pumping to your brain. But we will give you a smart tip: Depending on how and when you do it, your workout can give you the mental boosts you want.

Should I Try Parkour?

Parkour-specific gyms are popping up around the country, and the training discipline that involves getting from Point A to Point B as efficiently as possible–often by jumping, swinging, flipping, or rolling–is worth incorporating into your workout regime.

Should I Get a Gait Analysis?

You've probably had your running form critiqued by a coach or a well-meaning jogger in the park. But A true gait analysis is worth considering, even for the healthiest of runners.

How Can I Stay Fit While Flying?

Long flights and car trips wreak havoc on my body. How can I reduce the stress of travel and keep up with my current exercise routine?

Which Fitness Apps Should I Actually Use?

Popularity and ratings don't always give the best idea of which apps are still making a difference in people's fitness routines weeks or months down the road.

What's the Secret to Successful Mid-Day Napping?

A mid-day nap can be a great way to replenish your energy levels, especially when getting out the door for an afternoon run seems downright impossible. It can also be a preemptive tool for avoiding sleepiness later—say, when you get home from work and need to log your miles before dinner.

What's the Best Way to Fit a Workout into My Workday?

If you're unable (or unwilling) to spend an hour in the morning exercising before work, your lunch hour isn't a bad time to make up for it. Here's how to prepare for and schedule your day, plus three workout scenarios.

5 Brain Tricks for a Better Race

Speed isn't just the result of physical preparation. Training the brain to actually allow the body to run fast is another big part, as well. Author Pete Magill shares his insights to "convince your...