Main goal: solidify main set 1 goals (basic physical and tennis skills in a fun environment)
Measure stature once a week to make adjustments based off growth
Optimal window of opportunity: flexibility (6-10), agility and quickness(7-9B, 6-8G <5s), motor skills(9-12B, 8-11G), speed(13-16B, 11-13G <15-20s) aerobic capacity(before PHV), and strength(6-18mo after PHV boys and immediately after PHV girls)
70-80% training and 20-30%
No early specialization
Stay active but take 1 (ideally 2) days off from tennis per week
12-17h weekly training hours
Introduce recovery for off days