To delete apps on your iPhone, tap and hold an app icon for a couple of seconds until all the icons begin to shake. Tap the X icon on each app you want to remove and confirm the deletion in the pop-up screen that appears.
Various types of stimulants are used in the medical field to produce desired effects such as weight loss or improved concentration. According to the National Institute on Drug Abuse, stimulants such as Adderall or other amphetamines may be used medically to treat ADHD or other attention disorders.
Stimulants are chemicals that excite your central and/or peripheral nervous system. Excite, in this case, means to release more chemicals or send more/faster messages through your nervous and body. Most people think of stimulants in terms of illegal drugs, like cocaine.