Reminds me of subir, which also means going up.
Mnemonics are very helpful in Klingon.
How are I jumped and I will jump acceptable, but not I am jumping?
"I am jumping" is a statement of ongoing activity which requires the -taH or -lI' suffixes. "I jump" and "I jumped" are more general statements of incidence without reference to the time inside the activity and so do not need an aspect suffix.