{
 "id": "bag-work",
 "type": "drill",
 "names": {
  "name": "The bag",
  "th": "กระสอบทราย",
  "rtgs": "krasop sai"
 },
 "region": [
  "thailand"
 ],
 "facets": {
  "part": "bag"
 },
 "text": {
  "what": "Rounds on a heavy bag: power, and the bone.",
  "story": "The bag is where the shin is made. Repeated striking of a dense object thickens the bone — cortical remodelling — and there is no shortcut and no bottle of anything that does it faster.\n\n*Inference —* bag rounds come after pads because the point is throwing hard while tired, which is the fourth round of a fight."
 },
 "text_th": {
  "what": "ซ้อมกระสอบเป็นยก ทั้งแรงและกระดูก",
  "story": "กระสอบคือที่ที่แข้งถูกสร้าง การกระแทกของแข็งซ้ำ ๆ ทำให้กระดูกหนาขึ้น คือการปรับรูปของชั้นคอร์เทกซ์ ไม่มีทางลัดและไม่มีขวดอะไรที่ทำให้เร็วขึ้น\n\n*อนุมาน —* ยกกระสอบมาหลังเป้า เพราะประเด็นคือการออกอาวุธหนัก ๆ ทั้งที่เหนื่อย ซึ่งคือยกสี่ของไฟต์"
 },
 "kin": [
  {
   "to": "shin",
   "as": "What is being built.",
   "rel": "weapon"
  },
  {
   "to": "first-session",
   "as": "The order it all comes in.",
   "rel": "drill"
  }
 ],
 "sources": [
  "s:wp-muay-thai"
 ],
 "provenance": {
  "default": {
   "tier": "cited",
   "source": "s:wp-muay-thai"
  },
  "fields": {
   "text_th": {
    "tier": "inference",
    "note": "written in Thai by this project, not machine-translated"
   }
  }
 },
 "confidence": "medium",
 "tags": [
  "beginner"
 ],
 "schema": 1,
 "updated": "2026-09-19",
 "session": {
  "part": "bag",
  "minutes": "4–6 rounds",
  "when": "After pads, when you are already tired.",
  "hurts": "Your shins."
 },
 "images": [
  {
   "file": "bag-work/bag-work-learning-muay-thai-with-royal-thai-marines-160213-m-abebdde.jpg",
   "source": "commons",
   "title": "File:Learning Muay Thai with Royal Thai Marines 160213-M-CX588-053.jpg",
   "url": "https://upload.wikimedia.org/wikipedia/commons/a/ad/Learning_Muay_Thai_with_Royal_Thai_Marines_160213-M-CX588-053.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original",
   "page_url": "https://commons.wikimedia.org/wiki/File%3ALearning_Muay_Thai_with_Royal_Thai_Marines_160213-M-CX588-053.jpg",
   "license": "Public domain",
   "license_url": "https://en.wikipedia.org/wiki/Public_domain",
   "author": "Gunnery Sgt. Ismael Pena",
   "credit": "https://www.dvidshub.net/image/2421321/learning-muay-thai-with-royal-thai-marines",
   "alt": "Royal Thai Marines demonstrate Muay Thai techniques to U.S., Royal Thai and Republic of Korea Marines during Cobra Gold 16 at Sattahip, Thailand, Feb. 11, 2016. CG 16 is a multinational training exerc",
   "date": "2016-02-11",
   "primary": true,
   "sha256": "c276ad3da78fc23b9adc9ac3b9d2e9f47200d44f223843a51ceb8c7c22f3bb66"
  }
 ],
 "kin_in": [
  {
   "from": "shin",
   "type": "weapon",
   "name": "The shin",
   "as": "Where the bone is made."
  }
 ]
}