With practice, your ability to maintain focus will naturally improve. However, there are three techniques, counting, labeling and intention setting, that can be added to the above meditation that will provide you with immediate improvements.

Weight loss happens in the kitchen, not the gym.

Today I spent an hour doing interval training: 30 seconds hard sprint, 90 seconds active recovery.

According to the air bike, this burnt 650 calories.

Great, until you compare it to common food items. As an example, a regular (340g) sausage roll is 840 calories.

The point is, it would be a shame to put all that work in only to blow it with poor dietary choices.