holding the weight at the stress point

[derek_richmond]

hi,

i am a typical skinny guy, and i've found rather than doing the normal weight movements (bicep curl for example) rather than moving it up and down etc to hold it for as long as i can at when it is working the muscle(s) out the most.

is this advisable (maybe it makes a difference that i'm a skinny guy becuase sometimes my joints get sore before the muscle does whereas with this holding technique its the other way round)

thanks greatly for any comments.