Read the following sentence, pausing where you think you should. Rewrite the sentence, putting the commas in to coincide with the pauses you just placed in the sentence when you read it. In other words too many people are eating too much of the wrong things not eating enough of the right things and they aren’t moving enough.

In other words ,too many people are eating too much of the wrong things, not eating enough of the right things, and they aren’t moving enough.

Explanation:

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).