No correct way of grip what cos different grip will train up
diff muscle differently.... depends on what is the standard asked
of you mah.For Army IPPT,you can use whatever grip you want:palm
face in/out or hammer grip(one hand's palm face in,the other
out).But for NAPFA,i do not know the standard now but during my
time only palm face out method was accepted
There is one style of push up what work out the chest,which is
diamond push up style