Use the smallest effective dosage
Maximizing training time is always of utmost importance. Here are some quotes regarding organizing and using your time effectively.
When planning training, the emphasis should not be on what you will do, but rather how your body and mind will react to what you do. The goal is not simply to fulfill training, but to elicit a positive adaptation in your body and mind through training - to become faster, fitter or whatever your goal may be.
Keep at the fore of your mind the goal of training, be it to get faster or to become fitter. Too often secondary means to the goal become the goal itself. For instance, in an effort to improve health and fitness one may a lowering in weight important. This can then become the sole concern often at the expense of the true goal, health and fitness. For many athletes attaining a certain number of training hours is important to becoming faster, but when accumulating training hours becomes the goal, it is often at the expense of actually becoming faster. A good motto is: Train, Don't Strain. In other words, do only what it will take to reach your goal - not more, and not less.
The most fascinating thing about top athletes is their focus. They are at all times aware of what it takes to achieve and reach the goals they have set for themselves. Every time they train it is to achieve something specific. Every workout has a purpose. An easy training session is only successful if the tempo/lactate/heart rate was kept down. A level 3, interval session is only successful if the heart rate is kept within the pre determined levels. The athlete always has a certain type of training in mind and does everything to achieve the objectives of the day. If the training session is done too fast, too slow, too long, too short that means he/she did not achieve the objective of the day.
It might sound like the athletes are up tight. This is not the case at all. They just know what it takes to become good and what their bodies need and can take. They do not train two sessions every day, they do not train when they are sick, they are not obsessed with training, they have lives outside of training, they take days off, they work or go to school and best of all; they have a healthy perspective on sports."
"Use the smallest effective dosage." - Warning on a bottle of medicine, and good advice in general.