28 Jun '16, 8pm

Why you're slower in the summer and what to do about it.

Compounding things, when you sweat your blood volume decreases, less blood returns to your heart, less oxygen-rich blood reaches your working muscles, you produce less energy aerobically and you run slower for a given effort level. As it gets hotter this effect is exaggerated because the greater the amount of heat that needs to be dissipated, the greater the proportion of blood diverted to the skin. While the red blood cells contained in plasma don't play a role in the cooling process, your body can't separate the red blood cells (which carry oxygen) from the plasma—all are brought to the skin to induce a cooling effect. When oxygen is redirected via blood flow to your skin instead of your muscles, you have less energy to use for running, and your heart and lungs must work harder to compensate for the loss in oxygen. As you've experienced, this results in a higher heart ra...

Full article: http://www.runnersworld.com/race-training/training-in-the...

Tweets

5 good reasons to love training through the sum...

runnersworld.com 28 Jun '16, 12am

Even if you're not gunning for a personal record, summer brings a host of advantages that you'll miss once the snow starts...

Study finds that hot weather and thin air trigg...

runnersworld.com 28 Jun '16, 12am

Over the last few years, heat adaptation has been one of the hottest (pun intended) topics in endurance science. Training ...

Should You Try These Trendy Diets?

runnersworld.com 28 Jun '16, 4pm

What you put into your body is intimately linked to what you get out of it. Two runners who complete the exact same traini...

How Does Humidity Affect Heart Rate Training? Melissa’s Feeling the Heat https://t.co/3VqRVrPlMk

How Does Humidity Affect Heart Rate Training? M...

anothermotherrunner.com 21 Jun '16, 5am

Role Mother (and marathoner) Melissa is trying out the Half-Marathon Heart Rate Challenge and documenting it along the way...

7 things to remember when taking up swimming as...

runnersworld.co.uk 25 Jun '16, 5pm

You may have smashed out lengths at swimming galas as a youngster and enjoy a leisurely dip on holiday, but when it comes ...

Use these 5 tools to assess your progress durin...

mommyrunfast.com 28 Jun '16, 11am

I’m starting week four of marathon training for the Steamtown marathon. Even though it’s early in training, it’s nice to h...

The Only 4 Strength-Training Exercises You Real...

runnersworld.com 26 Jun '16, 1pm

I do my best to run 5 to 6 times a week, but there are days when I simply cannot pull myself out of bed in time to sweat b...

@jedschmidt I've seen good results with a heat gun

ineedcoffee.com 28 Jun '16, 12am

Choose a suitable roasting site. Due to chaff and smoke volume, I recommend doing this outdoors. Wind is the enemy. So is ...

Our Newbie pursues that one perfect running moment--the runner's high

Our Newbie pursues that one perfect running mom...

runnersworld.com 27 Jun '16, 4pm

Once, on a winter afternoon in 2014—during the era when I first tried and ultimately failed to become a runner—a magical t...

#SecDef Carter visits, mentors future leaders @...

army.mil 24 Jun '16, 7pm

Fort Knox, Ky. -- The leaders of tomorrow's Army met with one of the leaders of today's military as Secretary of Defense A...

Mother Runner SBS Training for a Fast 10K

anothermotherrunner.com 20 Jun '16, 5am

Despite it being surprisingly chilly (the mid-50s) for mid-June here in Portland, my BRF, Molly, and I have sweat flying o...

No more races on the horizon? No need to stop. ...

runnersworld.com 26 Jun '16, 1pm

During this interim period, keep a few general guidelines in mind: First, you should reduce your weekly mileage volume to ...

#216: Summer Running Advice

#216: Summer Running Advice

anothermotherrunner.com 24 Jun '16, 6am

From popsicles to perceived effort, Sarah and co-host Coach Christine Hinton offer up all the advice you need to survive s...

Amazing Grace: 12-Year-Old Sets Two World Records

runnersworld.com 23 Jun '16, 10pm

Ping established a new world record for 12-year-olds, breaking Vickie Cook’s 39-year-old single-age record by 10 seconds. ...

A 12-year-old girl set two incredibly fast worl...

runnersworld.com 23 Jun '16, 10pm

Ping established a new world record for 12-year-olds, breaking Vickie Cook’s 39-year-old single-age record by 10 seconds. ...