text: fitness challenges mein sabse bada challenge mental strength hota hai,kya tumhe kabhi aisa laga hai ki jab tak hum mentally strong nahi hote, tab tak kuch nahi ho sakta?haan, mental strength toh sabse zaroori hai, bina uske physical strength ka koi fayda nahi, chalo phir milkar meditation bhi shuru karte hain, kya kehna?