{"type":"firestarter.listing","listing":{"id":"lst_vrjAbYiM","product_name":"Gravity & Human Movement: Friend or Foe?","category":null,"description":"One of the foundational concepts in human movement is energy transfer. During human locomotion, the transfer of energy from one step to the next is directly related to the foot-to-ground relationship. Join Emily Splichal as she explores how our relationship with gravity directly impacts the quality and efficiency of movement patterns.\nLearn how to enhance your relationship with gravity to make it your friend, not your foe.\nWhat You’ll Learn\n\nDefine ground reaction forces and their relationship to gravity\nUnderstand how the neuromuscular system loads and unloads impact energy\nExplore strategies to optimize damping and transfer of impact forces\nIdentify common impact-related injuries and how to address them through exercise\n","images":["https://cdn.shopify.com/s/files/1/1605/2837/files/Gravity_HumanMovement_FriendorFoe_t-PDPSquare.png?v=1778192819"],"price":0,"currency":"USD","in_stock":true,"inventory_qty":9999,"dynamic_pricing":false,"listed_at":"2026-06-20T14:56:43.054Z"},"share_url":"https://firestarter.network/l/lst_vrjAbYiM","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_vrjAbYiM' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Gravity & Human Movement: Friend or Foe?' and a budget_max comfortably above $0.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}