4 Best Exercises for Ripped Abs and a Lean Stomach http://azhealthwellness.net/4-best-exercises-for-ripped-abs-and-a-lean-stomach/
Soccer Strength Training - Soccer Workout For Strength - Soccer Workouts - YouTube
HIIT Cardio and Abs Workout, Fat Burning Cardio + Core HIIT Workout, Core (includes Falling Side Planks for obliques)
Rihanna Abs Workout. Not sure who Rihanna is but this is a great workout.
We Dare You to Try This Super-Intense Core Exercise http://www.womenshealthmag.com/fitness/fitgif-plank-jack
Exercise machines totally fine to use, they might be especially helpful if you’re new to working out. http://greatist.com/move/best-gym-machines
Core: my custom printable workout by @WorkoutLabs #workoutlabs #customworkout
Ballet Strength - Ballet Core Exercise - YouTube