Move a deciduous tree in early spring before it begins to leaf out or early fall after the leaves begin to turn color. Donât move evergreens during a growth flush or in the fall when itâs too late for them to become established before winter weather arrives. Late summer is usually a good time to move evergreens.
Caffeine is a central nervous system stimulant that reduces fatigue and drowsiness. At normal doses, caffeine has variable effects on learning and memory, but it generally improves reaction time, wakefulness, concentration, and motor coordination.
Tolerance to Caffeine. When your nervous system gets a boost from a cup of coffee, your heart rate increases slightly, as does the amount of blood pumped through your veins. This speeds up your metabolism, but it also makes some people jittery. With habitual use, your body becomes accustomed to the effects of caffeine.