Exercising in Segments Burns More Fat

Taking a break of about 20 minutes between 2 sessions of 30 minute workout burns fat much faster than exercising for 60 minutes without taking a break.

This results in higher secretion of Adrenaline or epinephrine and a rapid decrease in insulin as a result of lower plasma glucose, which results in greater amount of fat breakdown.

Apart from this reason, its a known fact that sessions of moderate duration are more potent in keeping an individual more interested in his Fitness regime than the longer ones.