Rachel has been trying to lose 10 pounds, but she finds herself breaking her diet by eating sweets around 3 p. m. every day. she has low levels of mental alertness and sleepiness around this time of day which is probably due to the universal daily highs and lows in biological and psychological functioning known as:

Rachel has been trying to lose 10 pounds, but she finds herself breaking her diet by eating sweets around 3 p.m. every day. She has low levels of mental alertness and sleepiness around this time of day which is probably due to the universal daily highs and lows in biological and psychological functioning known as circadian rhythms.

answer; higher rate;