pep

pep(n):keen activity and forcefulness;vigour.
EX:Put a bit more pep into your work.
EX:The manager gave his team a pep talk at half time.

EX:Federal Reserve chairman Ben Bernanke's tough talk on inflation on Monday gave the greenback some pep, a welcome relief after last Friday's dollar slide sent oil to a fresh record of $139 per barrel.

pep(v):to make more active or interesting;enliven.
EX:A holiday is just what you need to pep you up.
EX:The food tasted rather bland , so she added some spices to pep it up a little.