[quote=@Etcetera]
<Snipped quote by DarkwolfX37>

Can chakra capacity be extended by repeatedly draining chakra reserves?
[/quote]

Not quite. If you totally run out of chakra, not likely for you especially since getting too low will leave you unconscious, you would die. Chakra is the mix of physical energy, which can be increased through training and exercise, and a type of spiritual energy, which can be increased by tudying, meditation, and experience. So practicing the same techniques over and over and over will improve your ability with that technique as well as your overall chakra reserves.