Becoming aware of core stability and how to activate your core whilst skiing will help deal with the pressure that skiing puts through the middle of your body. This will allow you to ski more varied terrain, at higher speeds and without holding back your ski technique.
Numerous skiers are unaware of the importance of core activation when skiing and how to activate their core effectively. The majority of skiers spend most, if not all, of their time skiing from turn to turn with very little or no middle body strength. If you ski with minimal strength in the middle of your body and core you run the risk of crumpling when you encounter force. The result of this would be a break at your waist where your shoulders are thrown forward and your hips (centre of your mass) drop back to compensate. This puts you out of balance and puts you in a weak and dangerous position to manage the forces encountered when skiing.