Show a humorous and creative scene of a hamster in a small underground gym, lifting weights made of nuts and seeds. The gym is carved into his burrow, with tiny workout equipment like dumbbells, a mini bench press, and a treadmill made from sticks and leaves. The hamster is determined, with an intense expression, lifting the nut weights with tiny paws. The setting is cozy and detailed, with earthy walls and soft lighting, creating a playful and dedicated workout atmosphere.