I Did the 12-3-30 Treadmill Challenge by Lauren Giraldo | HIIT or MISS for Weight Loss?!

The best cardio for weight loss + healthy dinner ideas! For 2 weeks I tried Lauren Giraldo treadmill routine 12-3-30. Here are my results and my review of it. In the video I talked about the difference between HIIT and LISS cardio, and where 12-3-30 stacks up. I talk about how it compares to other cardio types if weight loss is your goal, the good and bad of HIIT cardio. Also a little vlog footage and tons of healthy dinner ideas! Enjoy and have an amazing weekend everyone!


My HIIT Workout Spotify Playlist:

My Stretching Workout Spotify Playlist:

→ My Spotify is updated weekly with new workout playlists for you to enjoy while you workout! 🙂

Shop gymsharks new releases:

My current favourite stretch’s (helped me to do the splits) *free PDF*

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About Me:
Hi I’m Keltie a former college basketball player turned Youtuber.
Vlogging as I attempt different fitness challenges, ways to move your body, while I travel the world (little pause on that part hahah). Whether it’s running a marathon, sweating it out in a heart bumping spin class, attempting a handstand, debunking a workout myth, swimming in the ocean, or stretching in the sun. New project involving your perfect workout playlist coming soon too 🙂 Stay for BTS of that

My little passion project has been putting together some awesome workout playlists for you guys to enjoy! Follow them & me on spotify and I will keep updating them so you always have awesome music to workout to 🙂:

My Spotify for Workout Music account:


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