When you stretch your body you are moving your muscles and joints through their complete range of motion. A toddler may not notice how often they make movements that improve balance and joint flexibility. They are very much physically active, they bend over to pick up toys, throw balls, stretch their legs when riding bikes. All of these movements they make annoyingly have an endless amount of benefits such as, improved blood flow. We all stretch on a daily basis wether we notice or not; stretching benefits our bodies, muscles, and our health.
Force is something used on a day to day basis, it is the pressure exerted from one body to another. The action of running involves both feet off the ground; during this act the center of gravity vaults over the bent leg. The force of gravity acts on the runner between foot strikes with the ground; this force is pulling down on the runner. Toddlers are notorious for running around, the love being active. Running is a good way to improve their movement and coordination as well as keeping their bones healthy.
Jumping involves the application of force against a substrate, which in turn generates a reactive force that propels the jumper away from the substrate. There are two forces exerted onto the jumper gravity, and the ground. The jumper exerts force onto the floor lifting themselves off the ground. The force of gravity pulls the jumper back down onto the floor.
For someone to achieve balance their weight must be evenly distributed. This allows for them to remain upright and steady. The two forces acting will always be of equal magnitude. For example, a toddler on a balance beam is exerting the force of their weight onto the beam due to gravity pulling them down. The beam reacts with an equal force in the opposite direction, pushing them upwards. Because the forces of equal magnitude and in opposite direction the toddler achieves balance.
To climb is to make your way upwards, usually requiring a great effort. Climbing involves the use of your hands and feet. Your hands and feet provide the friction between the object you are climbing and your body. Climbing is a battle between the forces of friction and gravity occurring at the same time. The force of friction must be larger than the force of gravity for the toddler to climb, otherwise their body will remain on the ground.