Howcast - Learn how to do the rolling like a ball Pilates Mat exercise from Core Pilates NYC instructor Sarah Ruback in this Howcast workout video.

Howcast - Learn how to warm up for Pilates Mat by marching from Core Pilates NYC instructor Sarah Ruback in this Howcast workout video.

Howcast - Learn how to do irimi nage from the instructors at The New York Aikikai in this Howcast aikido video.

Howcast - Learn how to do the swan dive Pilates move from personal trainer Mindi Smith in this Howcast sexy legs workout video.

Howcast - Learn how to do calf raises from personal trainer Mindi Smith in this Howcast sexy legs workout video.

Howcast - Learn how to do the heel beat Pilates move from personal trainer Mindi Smith in this Howcast sexy legs workout video.

Howcast - Learn how to do the inner thigh pulse from personal trainer Mindi Smith in this Howcast sexy legs workout video.

Howcast - Learn how to do side-to-side pliés from personal trainer Mindi Smith in this Howcast sexy legs workout video.

Howcast - Learn when a baby should start to sit up from pediatrician Dyan Hes, M.D. in this Howcast video about newborn and baby development.

Howcast - Learn how to trim kids' bangs from stylist Janet Waddell in this Howcast hair tutorial.

Howcast - Learn how to cut your own hair from stylist Janet Waddell in this Howcast hair tutorial.

Howcast - Learn how to cut wisps of hair from stylist Janet Waddell in this Howcast hair tutorial.

Howcast - Learn how to texturize hair using scissors from stylist Janet Waddell in this Howcast hair tutorial.

Howcast - Learn how to do kubishime from the instructors at The New York Aikikai in this Howcast aikido video.

Howcast - Learn how to do hiji waza from the instructors at The New York Aikikai in this Howcast aikido video.

Howcast - Learn how to do the hook, also known as the gancho, from tango instructors Diego Blanco and Ana Padron in this Howcast Argentine tango dance video.

Howcast - Learn how to massage the face using deep tissue massage techniques from celebrity massage therapist Meagan Holub in this Howcast video.

Howcast - Learn how to do dead lifts with a bosu ball from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.

Howcast - Learn how to do a squat and over-the-top combo using a bosu ball from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.

Howcast - Learn how to do a pelvic tilt with a bosu ball from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.

Howcast - Learn how to do a bosu ball power knee exercise from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.

Howcast - Learn how to do a dumbbell workout with a bosu ball from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.

Howcast - Learn to do the best ab exercises you can do with a bosu ball from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.

Howcast - Learn how to do a crunch with a bosu ball from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.