The second statement best explains the type of blood vessel and the function of these vessels' valves - <span>These are veins, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
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Veins are large blood vessels which carry blood back to the heart. <span>Veins have a system of valves to prevent back-flow.</span>
Answer:
Build endurance and stenthen your heart and lungs!
Explanation:
doing and does not affect your mind into eating healthy and they are not fun for evreybody sooo we are left with choice #1
After a workout, your body needs time to rest and repair itself from the previous workout. According to the Mayo Clinic, running too far too often, lifting too much weight or simply pushing yourself too far can lead to muscle strains and sprains, shin splints, and stress fractures.
Step 5 is what I would say sorry if that did not answer you question
