Fred Cohen was a American scientist who brought forward the idea of computer viruses. he invented the computer virus defense techniques. He performed a series of studies in which he constructed programs that replicated themselves. He used the term computer 'computer virus' to describe them.
Objective is to complete as many curl-ups as possible up to a maximum of 75 at a specified pace. ... When performing the curl up students need to get their backs up off the mat far enough so that their fingertips cross the measuring strip.
