The study of extension/contraction, pushing/pulling, posture, bending, reaching, and twisting is called? ergonomics. repetitive strain. body movement. body mechanics.

This is one popular brand of exercise machine

Which form of birth control good people use without altering hormonal systems are blocking sperm from fertilizing an egg

Many1. why should teens be aware of health issues such as healthy sexuality, dealing with conflict, healthy decision making and cpr? 2. a) what are the 3 most important aspects/skills to learn in order to play volleyball activity well? b) explain how each aspect/skill is important when playing the game. c) describe 2 points of strategy you could use to you be successful at this activity.