Alistair Brownlee
Alistair Brownlee

When you ride fast and then rest for a bit, it causes a spike in your heart rate and helps your body deal with lactic acid. But you don't need to make it too complicated. Yorkshire is perfect because the hills work as intervals - you ride up them hard and then recover before the next one. Or you can just sprint to the next tree or lamppost.

Ana Ivanovic
Ana Ivanovic

It's not good to stretch when you're cold. Get your heart rate up, and once you finish, take time to stretch and let your body calm down.

Anna Kaiser
Anna Kaiser

A heart rate monitor is very important because every day is different. Sometimes you may have a ton of energy, and other days you may not, but you can hold yourself accountable for knowing how hard you're working by having a very specific goal to work toward.

Anna Kaiser
Anna Kaiser

Caffeine is hard on an empty system, so I try not to do it unless it's to get my heart rate up. If you drink caffeine 15 minutes before the workout, it can make it more effective. So I'll do tea or coffee after breakfast.

Arjun Rampal
Arjun Rampal

At times, I do Tabata, a high-intensity Japanese training regimen, in which I must do 20 seconds of a specific body part with 10 seconds of rest. This must be done eight times within four minutes. Your heart rate shoots through the roof, but you burn a lot of fat.

Bernardo Houssay
Bernardo Houssay

The constancy of the blood sugar level is maintained by a complex physiological mechanism, a homeostatic mechanism of the same order as those which maintain the body temperature, the blood pressure or the heart rate at normal levels and control many other functions.

Chris Kyle
Chris Kyle

You have to slow your heart rate, stay calm. You have to shoot in between your heartbeats.

Christy Turlington
Christy Turlington

I think there are so many extra benefits to running besides the health ones that come from getting your heart rate up, sweating, and all that other good stuff.

Colby Covington
Colby Covington

If I can't do one thing, which is a lower body exercise, then I'm gonna use my upper body, and I'm gonna get stronger upper body. If I'm not getting stronger upper body, I'll be working on my cardiovascular - swimming or other exercises where I can get my heart rate up.

Daniel Ricciardo
Daniel Ricciardo

I top up my endurance with running and cycling because in a race, your heart rate is up at 150, so we have to train at that level.