IMG model trainer Ricardo Riskalla shows you how to achieve the perfect waist for your shape
 
After long legs, the second most lusted-after part of a model is their narrow waists. Never oversculpted, over-muscly and too defined, the most celebrated waistlines usually have a subtle curve that's directly proportional to the width of one's hip width and their chest size.
 
But perfect proportions aside (we should ultimately be happy with our god-given bodies!), when training it pays to think about toning your waist. Here, I outline a few important factors that will assist you in this pursuit.  

Crunch time: 5 ways to get a perfect waist