Life makes you eat, not just workouts. Personally I focus my eating around my exercise.
Cal in = cal out works perfectly in long term studies but in reality eating near the time you work out does more good. Take 2 people who do the same workout and eat the same total amount of calories. Both people eat the same breakfast, lunch and supper also they both workout right after work before supper. However, one eats an afternoon snack, drinks sport drink during his ride then eats supper after. The 2nd skips the afternoon snack and drinks water during his ride; but has some snacks while watching tv before bed. Both did the same work and ate the same calories, but will those calories equal the same changes in muscle gain and fat loss? No, person one will have better glycogen stores during his ride and will recover faster. Person 2, by the time he eats the snack, will have already refuelled his muscles and then his late-night snack will be converted to fat while he sleeps.
Furthermore, eating before during and after exercise can minimize post exercise Immunosuppression reducing the risk of exercise related upper respiratory infections.
It just makes sense… put gas in while you are using it, less the rest of the time. So all workout get some food… the shorter workouts are just more intense right?