I switched to an ULTRA-Processed Diet for a week

I Tried Running an ULTRA MARATHON without Training

I took the US Navy Seals Fitness Test

I took the US Army Fitness Test Without Practice

I Lived the "Perfect" Healthy Life for a Week

I Trained with a Totally Badass Olympic Champion *she's 19...*

I Tried Out Intermittent Fasting for 7 Days

I HALVED MY SLEEP FOR A WEEK || LATEST SCIENCE (2018)

I Tried a New Legal Performance Enhancing Substance

I HALVED MY CALORIES FOR A WEEK || HERE'S WHAT HAPPENED

CAN YOU UNDO A "BAD" DIET? Calorie Burn Challenge!

MARATHON CALORIE BURN: ARE WEIGHTS FASTER? || CARDIO VS WEIGHTS CHALLENGE

MARATHON CALORIE BURN CHALLENGE || CARDIO VS WEIGHTS

WHY WEIGHING MYSELF STOPPED ME LOSING FAT

[Private video]

I TRIED THE INTERNET'S MOST POPULAR WORKOUT VIDEO

WHAT HAPPENS WHEN YOU STOP EXERCISING FOR 2 WEEKS?! *SCIENCE EXPLAINED*

I QUIT USING MY PHONE FOR A WEEK: PHONE DETOX

Calorie Burn Challenge: HIIT vs PLYO

I took the US Marine Physical Fitness Test

I Ate an EXTRA 1,000 Calories for a Week: Science Explained

I Tried to Run for 24 Hours. It Changed Me.

I Tried TikTok's Hardest Transformation Program for 48 Hours

I Tried Low-Carb for a Week

I Entered my First 100 Mile (160km) Ultramarathon *emotional*