Let's start with the coolest (literally), most Real Housewives of Beverly Hills option on the list... cryotherapy! Cryotherapy works by shocking the system with a dose of extremely cold temperatures. What does the cold

have to do with your metabolism, you ask? When confronted with the abnormally cold environment, the body's immune, nervous, and hormone systems respond by working overdrive, speeding up cell turnover, the healing of

inflamed areas, and yep, your metabolism. On the day of a session, patients burn an average of 500-800 extra calories, making this one cold, quick, expensive (one session is usually around $75) insta-detox.

For those of you who can't fathom exposing yourself to wildly cold temps, even if only for two minutes (*raises hand*), the opposite end of the temperature spectrum works to

speed up the metabolism too! The steam and sweat from a sauna help to rid the body of toxic chemicals that contribute to weight gain, while the body's attempt to regulate it's own

temperature helps to burn around 250 calories an hour.

While running on the treadmill for 30 minutes is a great way to de-stress and show your heart some love, it only speeds up your metabolism for the time that

you're running. If you want the great effects of your workout to follow you throughout your day, HIIT (high-intensity interval training) and strength training will do the trick beautifully. Alternating between

intense bursts of cardio for 30 seconds to 1 minute and 1-2 minute recovery periods can speed up your metabolism for up to eight hours after your workout, while pumping iron can

keep you burning calories more quickly for a whopping 39 hours after the workout. Check out this beginner's guide to HIIT training!

There's a reason hardcore fitness heads are all about protein shakes. Eating a diet rich in fish, eggs, and lean meat has been shown to rev up metabolism, while protein

deficiency has been shown to slow the body's metabolism. The best way to give your metabolism a jump-start in the morning  is to eat at least 30 grams of protein

in the first half hour of your morning. 

The metabolizing magic of green tea is in its EGCG (epigallocatechin gallate). EGCG is a superstar in the speedy metabolism community, and has been shown to have all kinds of anti-inflammatory effects

as well. A delicious cup of tea and a quicker metabolism, all in one mug? We'll take it.