Everything here is leading the industry, is a great supplement to SIMPLEFIT... and is FREE. Just follow along.
DAILY FITNESS SOLUTION BLOG - 20 minute workouts, six days a week. A bodyweight version of Crossfit, combining multiple fitness goals per week.
FITNESS BLENDER - follow-along videos ranging from 5 minutes to 90 minutes, little to no equipment. Choose your fitness goal and your intensity level and go wild. Easy way to add cardio to your day.
BE FIT CHANNEL - Youtube channel with hour-long workouts for bodyweight HIIT, cardio, yoga, pilates, dance fitness and more. Free.
BEAST SKILLS - tutorials on how to perform the pure-strength bodyweight moves gymnasts are renowned for.
MOBILITY WORKOUT OF THE DAY - the single best resources around to recover mobility lost due to inactivity, injury and age. Every day has a new video workout, from 5 to 15 minutes, and it's all about moving more freely with less pain.
FORWARD MOTION PT - a small collection of Youtube videos devoted to restoring perfect motion in the extremities. Several martial artists I know (including myself) really like these.
JAVOREK'S COMPLEXES - this is the university strength trainer who created the modern circuit -- and nobody has done it better than him. All you need is 20-25lbs dumbells and some willpower.
SCOOBY'S WORKSHOP - absolutely comprehensive resource for bodybuilding, including calorie calculators. Scooby focuses on the basics (hard work on fundamental movements, nutrition) and is a big proponent of calisthenics work.