what is my coworker doing with these probes?

[futurefields]

this guy at my work has this cell phone looking thing that has 2 wire probe things that he puts on his arm, and his arm twitches every couple seconds

is he shocking himself to stay awake?

 

[Drako]

this guy at my work has this cell phone looking thing that has 2 wire probe things that he puts on his arm, and his arm twitches every couple seconds

is he shocking himself to stay awake?

He's trying to build up his fapping muscles.

 

[quikah]

TENS device? Used for pain management mostly I believe.

You could ask him.

 

[Zstream]

this guy at my work has this cell phone looking thing that has 2 wire probe things that he puts on his arm, and his arm twitches every couple seconds

is he shocking himself to stay awake?

It's often used in physical therapy and if used appropriately, can increase muscle mass.