Originally Posted by koala logs

Interval training is also very useful but if you seldom or never do constant power training, you should start doing it more often.

On some structured training programs, you'll have interval sessions on some days and constant power sessions on some.

On long rides, the best way to maximize average speed is by maintaining constant power output. You'll finish the ride in the fastest time by simply riding at constant power. Even if that sounds boring but that's how it works.