fitness and endurance. But to kickstart a sluggish metabolism, you need intensity. Karp suggests interval training (condensed runs that combine intense efforts with recovery) because studies have found these workouts burn more calories during and after

. But to kickstart a sluggish metabolism, you need intensity. Karp suggests interval training (condensed runs that combine intense efforts with recovery) because studies have found these workouts burn more calories during and after exercise. “It also cuts down

-linolenic acid (ALA), a type of omega-3 that fights inflammation. The seeds also contain metabolism-boosting vitamin B6, and pack in 5.6g of fibre for every two tablespoons. Eat smart: Grind the flaxseeds with a mortar and pestle before sprinkling them on your