Alexa loves to compete in triathlons. It is important to her to improve her fitness and performance. In order to do this, Alexa will
increase the time of her cardiorespiratory endurance training workouts. To increase the time, she will run, bike and swim the same
distances but she will perform them at a faster pace. What principle of training is Alexa applying and explain why it is the correct
answer?

Alexa is using the FITT  that is Frequency, Intensity, Time, and Type principle. She  is making use of the Time part of it. It is correct as she is adding more time that is in the FITT principle.

Alexa will increase the time of the cardiovascular and endurance training workouts. Hence is performing them at a much faster rate. Hence is using the FITT principle.

Learn more about the  compete in triathlons.

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Muscles in the body us with a lot of things for example, if i wanted to lift a heavy box and had no muscle i would just collapse where i was because of the fact muscles hold us together. overall they are 650 muscle in the human body, all of them have different purposes and ways to keep us together. there are three types of muscle in the body skeletal, smooth, and cardiac muscle. skeletal muscle are attached to the bone and with movement. smooth muscle, this is found in the wall of our organs, such as our stomach, this muscle with movement   as well, without this muscle, we would only be allowed to eat small amounts. the cardiac muscle is the heart muscle and probably the most important one. these are only found in the walls of the heart and the heart pump blood to the other parts of your body. we have two different types of muscle fibers, slow twitch and fast twitch. slow twitch muscles enable long-endurance feats such as distance running. fast twitch fatigue faster but are used in powerful bursts of movements like sprinting. there are three different types of muscle contractions concentric, eccentric, isometric. concentric contraction causes muscles to shorten, thereby generating force.   eccentric contractions cause muscles to elongate in response to a greater opposing force. isometric contractions generate force without changing the length of the muscle.: //athleticquickness.com/muscle-contraction-types-part-1/

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