Howcast - Learn how to do a bent knee push-up from personal trainer Brett Azar in this Howcast home arm workout for men video.

Howcast - Learn how to do an alternate dumbbell curl from personal trainer Brett Azar in this Howcast home arm workout for men video.

Howcast - Learn how to do a barbell curl from personal trainer Brett Azar in this Howcast home arm workout for men video.

Howcast - Learn how to escape from a side mount from Alliance MMA black belt Babs Olusanmokun in this Howcast Brazilian Jiu Jitsu video.

Howcast - Learn how to escape from mount position from Alliance MMA black belt Babs Olusanmokun in this Howcast Brazilian Jiu Jitsu video.

Howcast - Learn how to do the arm bar from guard from Alliance MMA black belt Babs Olusanmokun in this Howcast Brazilian Jiu Jitsu video.

Howcast - Learn how to defend yourself against a throat grab from Alliance MMA black belt Babs Olusanmokun in this Howcast Brazilian Jiu Jitsu video.

Howcast - Learn how to get out of a double lapel grab from Alliance MMA black belt Babs Olusanmokun in this Howcast Brazilian Jiu Jitsu video.

Howcast - Learn how to do barbell curls from certified personal trainer Max Tapper in this Howcast gym workout video.

Howcast - Learn how to do three tactics to counter elbow attacks in kickboxing from Mushin MMA's Sean Hinds in this muay Thai training video from Howcast.

Howcast - Learn how to do the coin through the elbow trick with step-by-step instructions from magician Jason Suran in this magic tricks revealed Howcast video.

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

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

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

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

Howcast - Learn two backhand techniques from NYC Badminton's Chris Awong in this Howcast video. Thumbnail: IMG_0890_Web by Eric MARTEEL/ericmarteel/Flickr

Howcast - Learn how to grip your racket properly from New York City Badminton's Chris Awong in this Howcast video.

Howcast - Learn the Fubuki as part of the Kukishinden Ryu advanced technique from Sensei Oliver Martin in this Howcast ninjutsu video.

Howcast - Learn the Gon Signagi technique, part of the Torite Goho patterns, from Sensei Oliver Martin in this Howcast ninjutsu video.

Howcast - Learn the Musha Dori technique, part of the Torite Goho Patterns, from Sensei Oliver Martin in this Howcast ninjutsu video.

Howcast - Learn tanto tori -- how to defend an attack with a tanto, or knife -- 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 give a deep tissue massage using your elbows from celebrity massage therapist Meagan Holub in this Howcast video.

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