Answer:
D. immune suppression
Explanation:
Sleep deprivation may decrease production of these cytokines. In addition, infection fighting antibodies and cells are reduced during periods when you don't get enough sleep. So, your body needs sleep to fight infectious diseases.
https://www.mayoclinic.org/diseases-conditions/insomnia/expert-answers/lack-of-sleep/faq-20057757
Answer: Kallie should focus on the type; performing a different activity to achieve her goal (Option D)
Explanation: As Kallie is already giving a lot of time in practicing and her technique and energy output are outstanding, so her frequency, intensity and time in the FITT cycle are being completed.
She should focus on the type of activity she is performing. She should change it and see if it would make her tennis serve better.
Yea but it’s only a 99% chance you won’t
Stimulants increase heart rate, increased blood pressure, constrict blood vessels, increased blood glucose
