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What happens to the body when we fast for 36 hours? 🕰️✨

2025/9/11 Edited to

... Read moreหลายคนเสิร์ชคำว่า IF 36 ชั่วโมง / อดอาหาร 48 ชม. เพราะอยากรู้ว่า “อดยาวๆ แล้วร่างกายทำอะไรอยู่” และควรเริ่มยังไงให้ปลอดภัย ไม่หลุดกลางทาง ฉันเลยขอสรุปเป็นไทม์ไลน์ + ทิปจากประสบการณ์แบบเข้าใจง่าย (ไม่ใช่คำแนะนำทางการแพทย์นะ) ไทม์ไลน์คร่าวๆ ของการอด 36 ชั่วโมง - ช่วง 0–6 ชม.: ยังใช้พลังงานจากมื้อที่แล้วเป็นหลัก กลูโคสในเลือดและไกลโคเจน (glycogen) ยังพอมีอยู่ หลายคนยังไม่หิวมาก - ช่วง 6–16 ชม.: เริ่มรู้สึกหิวเป็นระยะๆ โดยเฉพาะถ้าปกติทานเป็นเวลา ร่างกายค่อยๆ ดึงไกลโคเจนที่สะสมไว้ (ตับ/กล้ามเนื้อ) มาใช้ พลังงานยังพอไปได้ แต่อารมณ์อาจแกว่งถ้านอนน้อย - ช่วง 16–24 ชม.: จุดที่คนชอบบอกว่า “ผ่านช่วงยากแล้ว” ความหิวอาจมาเป็นคลื่นๆ แต่ถ้าดื่มน้ำ/เกลือแร่พอ มักจะดีขึ้น หลายคนเริ่มรู้สึกโล่งท้อง เบาสบาย - ช่วง 24–36 ชม.: ร่างกายเริ่มพึ่งพาไขมันมากขึ้น และมีการสร้างคีโตน (ketone) มากขึ้น บางคนบอกว่ามีความโฟกัสดีขึ้น แต่บางคนอาจมึน/อ่อนแรงถ้าเกลือแร่ไม่พอ แล้ว “Autophagy” อยู่ตรงไหน? คำว่า autophagy เป็นกระบวนการซ่อมแซม/กำจัดของเสียในเซลล์ที่เกิดขึ้นได้ตามธรรมชาติอยู่แล้ว แต่อาจเพิ่มขึ้นเมื่อร่างกายอยู่ในภาวะขาดพลังงานช่วงหนึ่ง (เช่น การอดอาหาร) ประเด็นคือ “เวลาเริ่ม” แตกต่างกันในแต่ละคน และไม่ได้มีนาฬิกาตรงเป๊ะว่า 36 ชม. ต้องเกิดแน่นอน ฉันเลยมองเป็นแรงบันดาลใจให้ดูแลการกินมากกว่าไล่ตัวเลข IF 36 ชั่วโมง vs อดอาหาร 48 ชม. ต่างกันยังไง? - 36 ชม.: สำหรับมือใหม่มักพอทำได้กว่า ฟื้นตัวง่ายกว่า และความเสี่ยงอาการเพลีย/หลุดน้อยกว่า - 48 ชม.: เข้มกว่า ต้องใส่ใจน้ำและเกลือแร่มากขึ้น บางคนหลับยาก หนาว มือสั่น หรือปวดหัวได้ง่ายกว่า ถ้าไม่ชินไม่แนะนำให้กระโดดไปทำทันที ทิปให้ “รอด” แบบไม่ทรมาน 1) เลือกวันให้ดี: วันที่งานไม่หนัก ไม่ต้องออกกำลังหนัก และนอนได้เต็มที่ 2) ดื่มน้ำสม่ำเสมอ: ความหิวหลายครั้งคือกระหาย 3) เติมโซเดียม/เกลือแร่: โดยเฉพาะช่วง 24 ชม. ขึ้นไป ช่วยลดปวดหัว/มึนได้มาก 4) ดื่มกาแฟ/ชาระวัง: ช่วยกดหิวได้ แต่ถ้าท้องว่างแล้วใจสั่นให้ลด 5) ตอน “break fast” อย่าจัดหนัก: เริ่มจากมื้อเล็กๆ โปรตีน+ผัก ย่อยง่าย แล้วค่อยเพิ่มคาร์บ/ไขมัน ไม่งั้นอาจปวดท้องหรือถ่ายเหลว ข้อควรระวัง ถ้ามีโรคประจำตัว (เช่น เบาหวาน), กินยาที่มีผลกับน้ำตาล/ความดัน, ตั้งครรภ์/ให้นม, หรือมีประวัติความผิดปกติการกิน ควรหลีกเลี่ยงหรือปรึกษาแพทย์ก่อนเสมอ ถ้าคุณกำลังชั่งใจระหว่าง 36 กับ 48 ชม. ฉันเชียร์ให้เริ่มจาก 36 ชั่วโมงก่อน แล้วสังเกตร่างกายตัวเอง (พลังงาน ความหิว การนอน อารมณ์) เพราะทำได้ต่อเนื่องแบบพอดี มักเวิร์กกว่าฝืนสุดๆ ครั้งเดียวแล้วพักยาว

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