Jock itch (tinea cruris) is a fungus, the same one that causes athlete's foot and scalp ringworm. The groin area is the perfect place for the fungi to grow and cause a fungal infection because it is moist, warm and dark.
The camshaft lift is the resultant net rise of the valve from its seat. The farther the valve rises from its seat the more airflow can be provided, which is generally more beneficial. Greater lift has some limitations.
BHP means break horse power or is it which just means horse power. horse power is a way we measure how much power an engine has and how fast the work can be done. RPM means rotation per minute which measures how fast an engine's crankshaft is spinning (360 degrees) for every minute. hope this answers your question