to talk in an informal or familiar manner connected to a computer or telecommunications system (such as the internet)
chat online
to practice one of several systems of self-defense, such as karate, taekwondo, etc.
do martial arts
to plunge into water intentionally
go diving
to skate over ice with special boots with metal blades attached to the bottoms
go ice skating
to visit a store that specializes in selling illustrated comic books
go to a comic store
to visit one's friends, usually at their homes
see friends
to take classes to learn how to play a six-stringed instrument with a long neck and a large body
take guitar lessons
to play a game that involves two teams volleying an inflated ball back and forth over a net
play volleyball
