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Mengapa Pria Sering Ereksi di Pagi Hari? Ini Alasannya Bangun tidur dalam kondisi ereksi adalah hal yang kerap terjadi pada pria tanpa pernah tahu apa penyebabnya. Ada yang menyebut hal tersebut sebagai bentuk pelampiasan libido pria yang tinggi. Ada pula yang menyebutnya sebagai 'buah' dari mimpi basah. Berbagai dugaan tersebut tidak seratus persen salah, namun menurut beberapa penelitian ilmiah,ereksi saat bangun tidur adalah hal yang normal dalam fungsi seksual pria.
(Baca juga artikel:Ereksi Tahan Lama dengan Suntik Botox )
Dalam dunia medis, fenomena ereksi saat bangun tidur dikenal dengan istilahnocturnal penile tumescence (NPT) yang terjadi secara spontan pada pria. Ereksi spontan ini bisa terjadi hingga empat kali saat tidur, lalu berlanjut ketika bangun dan buang air kecil. Menariknya, NPT terjadi pada pria sejak kecil, bahkan sejak masih di dalam kandungan, hingga usia manula. NPT menjadi tanda apakah fungsi seksual seorang pria berjalan dengan baik atau tidak. Normalnya, NPT terjadi setidaknya lima kali dalam seminggu. Jika kurang dari itu, bisa dikatakan pria terkait berisiko mengalami disfungsi seksual.
Ereksi di pagi hari bermula pada fase tidurRapid Eye Movement (REM), yakni tahap tidur dalam ( deep sleep ) yang menjadi area terbentuknya mimpi. Fase REM ditandai dengan gerakan bola mata ke kiri dan kanan secara berkala saat terpejam. Hal ini menandakan laju respirasi dan aktivitas otak serta otot menjadi lebih rileks. Ketika aktivitas sel-sel dalam tubuh berkurang, maka produksi hormon testosteron (hormon maskulinitas) meningkat yang berujung pada kondisi ereksi spontan saat tidur hingga mimpi basah. Ereksi saat tidur berlangsung dalam durasi singkat dan berkali-kali, tergantung seberapa dalam kita tertidur.
(Baca juga artikel:Fakta Oral Seks yang Perlu Anda Ketahui )
Ketika tiba-tiba terbangun dalam fase REM, terjadi hentakan yang membuat seluruh sel dalam tubuh menegang dan aliran darah mengalir lebih kencang, termasuk ke area penis. Akibatnya penis pun mendadak ereksi karena 'desakan' aliran darah yang menyebar ke seluruh tubuh secara drastis. Namun ada pula teori lain menyebut bahwa ereksi di pagi hari terjadi akibat pelepasan nitrat oksida pada fase tidur dalam sehingga membuat otot menjadi rileks dan pembuluh darah melebar. Hal ini memungkinkan alirah darah berjalan lancar sehingga terjadi ereksi.
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TEKS: HAPPY FERDIAN
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