Ms Sheila doing some exercises on the mat but not without her Weight Paralyzing Necklace on. Here's the card's info:
Fatness Fitness
Continuous Spell
If a "My Pudgyville Pony" monster(s) would gain or lose DEF, put 1 Weight Paralyze Counter on this card instead. You must control "My Pudgyville Pony Ms. Sheila" to activate and to resolve this effect. You can only control 1 "Fatness Fitness".
Common