Previous research has shown that coupled with a short nap, consuming caffeine prior to the nap can alleviate the effects of sleep inertia. Nonetheless, individual degree of consumption and tolerance to caffeine may be responsible for variation in its efficacy to reduce sleep inertia symptoms. Light
The natural light provided by the sunrise may contribute to a reduction in sleep inertia effects. Research simulating increase of light at dawn was shown to potentiate the cortisol awakening response (CAR). The CAR is a spike in blood cortisol levels following awakening, and is associated with the return to an alert cognitive state. Other
Some other interventions that could potentially minimize the effects of sleep inertia are sound and temperature. There is moderate evidence that the presence of mild sounds and a sharp decrease in the temperature of the extremities may independently reverse sleep inertia symptoms. Noise, especially music, is thought to increase attentiveness and decrease ones subjective feeling of sleepiness upon awakening. A drop in temperature of the extremities may prevent heat loss upon awakening, facilitating the return of core body temperature to homeostatic daytime levels. See also
Circadian rhythm sleep disorder
Delayed sleep phase syndrome
Shift work
Sleep deprivation

References
External links
Flying Safely Article on Napping
Siti or SITI may refer to:

People
Siti (given name), a common Malay female given name
Siti Kassim (born 1961), Comorian politician
Siti Mwinyi (born 1932), Tanzanian first lady
Beáta Siti (born 1973), Hungarian handball player and coach
Eszter Siti (born 1977), Hungarian handball player
Walid Siti (born 1952), Kurdish artist
Siti Badriah (born 1991), musical artist Dancedhut at the Productions Nagaswara

Places
Siti Hydroelectric Power Station (disambiguation)

Other
Siti, character in Opera Jawa
Saratoga International Theater Institute, theater  company in New York, United States
SITI: An Iconic Exhibition of Dato Siti Nurhaliza
Siti (film), 2014 Indonesian film
Siti Networks
Siti language
Stevens Institute of Technology International, former private university in Dominican Republic

See also
All pages with titles containing Siti
All pages with titles beginning with Siti