Kayla Itsines [it-seen-ez]. If you don’t know her, you should. She’s an Australian trainer and creator of the Bikini Body Guide (BBG). Her guide is specifically for women, but it definitely kicks my husband’s butt when he joins me in the circuits.
She has 3 ebooks now purely dedicated to workouts. Weeks 1-12, 13-24, and 25-36. They consist of Monday/Wednesday/Friday 28 minute resistance training circuits and Tuesday/Thursday cardio for 35-45 minutes. She provides the circuits, while you get to choose what kind of cardio you want to do (walk, hike, bike, etc)!
Here’s an example: set a timer for 7 minutes and do circuit 1 as many times as you can. When the timer goes off, take a 30-90 second breather. Set the timer again for 7 minutes and do circuit 2 as many times as you can. 30-90 second breather. Repeat.
I’ve been using her guides for about 2 years now and absolutely LOVE them! I’ve gained so much strength and have been toning my muscles while increasing my endurance. I seriously could talk about these guides for days. Did I mention it’s only 28 MINUTES?!?
If you’re interested in joining the BBG community, you can purchase the ebooks here.