Benefits of wearing Waist Trainer: 
 
An hourglass figure
When the waist trainer is put on and tightened, many people feel that it gives them a more attractive figure with an impressively slim waist, accentuated bust, and curvy hips.
The concept is that if you wear the waist trainer for long enough periods, your body will be trained to maintain that shape.
 
Better posture
While you’re wearing a waist trainer, it’s likely that you’ll maintain good posture. There’s a concern, however, that wearing a waist trainer too much may weaken your core muscles which could lead to poor posture and back discomfort.
 
Decreased appetite
The claim for a decreased appetite is based on the waist trainer putting pressure on your stomach. If your stomach is compressed, it’s likely that you’ll reach a feeling of fullness faster than if your stomach was not being squeezed.
 
Weight loss
Although there’s anecdotal evidence of weight loss during waist training, it is most likely due to fluid loss from perspiration.