10/13/2026
My parents used to mark my height on the doorframe in our kitchen with a pencil.
I thought of that recently while talking to two athletes who are injured during a big growth spurt. Turns out that simple habit might be one of the most underrated injury prevention tools a sports parent has.
During a growth spurt, your kid's bones lengthen faster than their muscles and tendons can keep up. Bone density dips temporarily. Growth plates become more vulnerable. Coordination breaks down. The nervous system is playing catch-up.
The result is a window of genuine biological risk that no amount of toughening up can fix.
What does that look like practically? Measure your kid every 3 months, same time of day, no shoes. Mark it. If they grow more than 1.5 to 2 inches in a quarter, that is your signal to pull back on volume and intensity, add more flexibility and neuromuscular work, and have a conversation with their coach.
The goal is a long career. Not a big season.
Save this for the next growth spurt.