You don't need leg raises or heavy weights to strengthen your core and hips, just try the dragon flag calisthenics exercise.

Goku faced Red Ribbon frustrations before his infiltration of Muscle Tower, but this dungeon-like takedown has become the storyline’s climax so far. Dragon Ball spends six episodes in Muscle ...

Dragon flags are a bodyweight compound exercise ... “They work your deep core muscles and superficial ab muscles,” say Cody Lwin, a Certified Strength and Condition Coach and Sports Therapist ...