Picture this: You set a goal to bench press 200 pounds.  To accomplish this goal, once or twice a week, (maybe three times) you go into the gym and bang out 5 hard reps of bench press and call it a day.  Would this manner of training get you to your bench press goal?  No way.  Why?  Because your muscles aren’t getting enough of a stimulus to grow or get stronger.  Duh.

Throwing is the same way: throw sparingly and you won’t develop your arm to its potential.  Throw often and your arm will be strong and durable.  Ever see an infielder, especially a catcher, go down with arm problems?  Probably not too often. But if you’ve been around baseball long enough, you’ve surely noticed that outfielders complain about their arms hurting as much as anyone.  The reason for this is that outfielders infrequently throw, both in practice and in games, and when they do it is often with maximum effort.

Why, physiologically, does throwing a ton make you throw harder?  Your body just recognizes the need to build strength because the muscle group is consistently stimulated.  This is why climbers have incredible hand strength, and cyclists have monster calves and thighs.  They’re both just doing what they do for hours a day, and their bodies respond by sending the muscular reinforcements.

Pitchers should not consistently go hard and rest on alternate days.  It’s stressful, the arm doesn’t learn to recover quickly, and the repetition needed for growth isn’t there with too many off days. Off days are needed every week, but limiting them to 1 or 2 is ideal, and the other days should be filled with high volume, low intensity throwing to keep your muscles working.

The Repetition Recommendation:

-Add more high-repetition, low-intensity throwing days into your weekly workload.  As long as one’s arm is without pain and deadness, then throwing 5 or 6 days per week should have a very positive effect.

What does one of these high-rep days look like, you ask?  

100-140 very light but crisp throws from 45-75 feet.  This is the time to work on mechanics and pitches, all without stressing the arm. If done at the correct intensity, you should breeze through the 100+ throws without fatigue, and feel fresh the next day.  This is going to get your body used to throwing often, making it able to recover faster.  Additionally this will give you tons of reps to perfect mechanics, arm slot, pitches, etc, all of which add up to better pitching performance aside from velocity.

These high-volume days should be combined with regular bullpen sessions, as well as long toss, which is extremely important and is another huge contributor to throwing that cheese.