Gusto ko magkaroon ng upang ako ay

First to answer will be the brainliest i need the answer asap

90% of people marry there 7th grade love. since u have read this, u will be told good news 2night. if u don't pass this on nine comments ur worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of ur life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love u

What is the principle whereby improvement occurs when increased demands are made upon the body