Activity can help prevent heart disease and stroke by strengthening your heart muscle, lowering your blood pressure, raising your high-density lipoprotein (HDL) levels (good cholesterol) and lowering low-density lipoprotein (LDL) levels (bad cholesterol), improving blood flow. and your hearts over all function
I think out of all the answers, it should be genetic testing
Answer:
a) Teens who use the Internet and phone after bedtime have a variety of sleep problems.
Explanation:
The STRICT (sleep time related information and communication technology) study performed in American adolescents showed that a high number of adolescents use their cell phone after bed time what results in insomnia, daytime sleepiness, later bedtimes and shorter sleep duration which are all sleep problems associated with the use of the cellphone and communication technology during sleep hours.
62% of the teens used their phone after bedtime, 56.7% texted/tweeted/messaged in bed, and 20.8% awoke to texts interrupting their sleep and the quality of it.
The answer can be both increase in self-esteem and increase in aggression. All of the research generally points to increase of self esteem because during puberty self awareness is very prominant which increases self esteem. I would be safe and go with self esteem. I hope this helps.
