Social media is an addictive stream of fitness models, colourful smoothies and photo-perfect smiles. Four experts on the thin line between a healthy lifestyle and unhealthy habits.

Judging from the killer bodies we see on Instagram or the inspirational quotes we read on blogs, healthy living is a one-way-ticket to happiness. But evidence suggests otherwise. Peer pressure, eating disorders and a negative self-image are the alarming side-effects of new wellness trends. When does a healthy lifestyle become an unhealthy habit?