Present Bias

Despite long-term health benefits of adhering to healthy behaviors, the cost of doing so must be paid in the present. 

Individuals may plan to quit bad behaviors, but when the time arrives, they tend to postpone. 

That is because we tend to overvalue immediate rewards and undervalue long-term behavior. 

See the full study here :

Wang, Y., Sloan, F.A. Present bias and health. J Risk Uncertain 57, 177–198 (2018).

Want to know more about biases?

Social Desirability Bias

Confirmation Bias

Halo Effect

Third Person Effect