{"product_id":"on-serious-mass","title":"On Serious Mass","description":"\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003csection data-turn=\"assistant\" data-scroll-anchor=\"true\" data-testid=\"conversation-turn-6\" data-turn-id=\"request-WEB:7ba820d8-3132-45f6-87db-62c9d663349c-2\" dir=\"auto\" class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-turn-start-message=\"true\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-3\" dir=\"auto\" data-message-id=\"54f506cf-cb85-4526-8cc1-919b7f3c02e8\" data-message-author-role=\"assistant\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cp data-end=\"135\" data-start=\"104\"\u003e\u003cstrong data-end=\"135\" data-start=\"104\"\u003eBuild Size the Smart Way 💪\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"309\" data-start=\"137\"\u003eGaining muscle comes down to one key factor — consistently eating more calories than you burn. But for a lot of people, getting enough food in every day can be a challenge.\u003c\/p\u003e\n\u003cp data-end=\"364\" data-start=\"311\"\u003eThat’s where Optimum Nutrition Serious Mass steps in.\u003c\/p\u003e\n\u003cp data-end=\"643\" data-start=\"366\"\u003eDesigned for those chasing real size, this high-calorie formula makes it easier to hit your daily intake without force-feeding meals. Each full serve packs a massive 1250 calories, including 50g of protein and over 250g of carbohydrates to support growth, energy, and recovery.\u003c\/p\u003e\n\u003cp data-end=\"925\" data-start=\"645\"\u003eYou’re also getting more than just calories — with added creatine monohydrate and glutamine to help support strength, performance, and recovery, plus a blend of 20 essential vitamins and minerals. Best of all, there’s no added sugar — just quality nutrients in a convenient shake.\u003c\/p\u003e\n\u003chr data-end=\"930\" data-start=\"927\"\u003e\n\u003cp data-end=\"949\" data-start=\"932\"\u003e\u003cstrong data-end=\"949\" data-start=\"932\"\u003eKey Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1346\" data-start=\"950\"\u003e\n\u003cli data-end=\"1000\" data-start=\"950\" data-section-id=\"1oejlup\"\u003e\n\u003cp data-end=\"1000\" data-start=\"952\"\u003eSupports muscle growth and overall weight gain\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1060\" data-start=\"1001\" data-section-id=\"ubq1fd\"\u003e\n\u003cp data-end=\"1060\" data-start=\"1003\"\u003eHigh-calorie formula to help maintain a calorie surplus\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1116\" data-start=\"1061\" data-section-id=\"1k9fk08\"\u003e\n\u003cp data-end=\"1116\" data-start=\"1063\"\u003e50g protein blend to build and maintain lean muscle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1176\" data-start=\"1117\" data-section-id=\"1di3ijh\"\u003e\n\u003cp data-end=\"1176\" data-start=\"1119\"\u003eOver 250g carbs to fuel training and replenish glycogen\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1234\" data-start=\"1177\" data-section-id=\"ihtq1q\"\u003e\n\u003cp data-end=\"1234\" data-start=\"1179\"\u003eIncludes creatine to assist strength and power output\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1285\" data-start=\"1235\" data-section-id=\"1154g7\"\u003e\n\u003cp data-end=\"1285\" data-start=\"1237\"\u003eFortified with essential vitamins and minerals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1346\" data-start=\"1286\" data-section-id=\"h7gadu\"\u003e\n\u003cp data-end=\"1346\" data-start=\"1288\"\u003eGreat for post-workout recovery or boosting daily intake\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"1351\" data-start=\"1348\"\u003e\n\u003cp data-end=\"1514\" data-start=\"1353\"\u003e\u003cstrong data-end=\"1375\" data-start=\"1353\"\u003eWho should use it?\u003c\/strong\u003e\u003cbr data-end=\"1378\" data-start=\"1375\"\u003ePerfect for hard gainers, athletes training at high intensity, or anyone struggling to consume enough calories through whole food alone.\u003c\/p\u003e\n\u003chr data-end=\"1519\" data-start=\"1516\"\u003e\n\u003cp data-end=\"1767\" data-start=\"1521\"\u003e\u003cstrong data-end=\"1544\" data-start=\"1521\"\u003eHow \u0026amp; when to take:\u003c\/strong\u003e\u003cbr data-end=\"1547\" data-start=\"1544\"\u003eUse it after training to support recovery or between meals to increase your daily calorie intake. Mix two scoops with around 700ml of water or milk in a blender. New users can start with half a serve to assess tolerance.\u003c\/p\u003e\n\u003chr data-end=\"1772\" data-start=\"1769\"\u003e\n\u003cp data-end=\"1914\" data-start=\"1774\"\u003e\u003cstrong data-end=\"1794\" data-start=\"1774\"\u003eMass Mackay Tip:\u003c\/strong\u003e\u003cbr data-end=\"1797\" data-start=\"1794\"\u003eIf size is the goal, consistency with your calories is everything — this is one of the easiest ways to stay on track.\u003c\/p\u003e\n\u003chr data-end=\"1919\" data-start=\"1916\"\u003e\n\u003cstrong data-is-last-node=\"\" data-end=\"1951\" data-start=\"1921\"\u003e Big calories. Big results.\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Optimum Nutrition","offers":[{"title":"Vanilla \/ 2.27kgs","offer_id":44071306788963,"sku":"748927064155","price":89.9,"currency_code":"AUD","in_stock":false},{"title":"Vanilla \/ 4.55kgs","offer_id":44071306821731,"sku":"15338","price":0.0,"currency_code":"AUD","in_stock":false},{"title":"Chocolate \/ 2.27kgs","offer_id":44071306854499,"sku":"15337","price":89.9,"currency_code":"AUD","in_stock":false},{"title":"Chocolate \/ 4.55kgs","offer_id":44071306887267,"sku":"15339","price":0.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0260\/1290\/9667\/files\/Remove_background_project_9_da81c9a9-c19b-41e6-af0b-b74a527d7ebb.png?v=1773961762","url":"https:\/\/www.massnutritionmackay.com\/products\/on-serious-mass","provider":"Mass Nutrition Mackay","version":"1.0","type":"link"}