Her Changing Game — Book 7 | Her Game Guide
B7
U12–U13 · 9v9

Her Changing Game

Coaching girls at Under-12 and Under-13 — the 9v9 game

“Her body is changing. Her confidence is under pressure. This is the most important book in the series.”

2–3×
Higher ACL risk for female footballers vs males (Waldén et al. 2011)
64%
ACL reduction with Knee Control warm-up (Waldén BMJ 2012, girls 12–17)
88%
Female footballers say menstrual cycle affects training (FA Female Health Hub, 2026)
Coach Note
When a player who was fluid and confident last season suddenly looks clumsy or hesitant — before you question her attitude or effort, ask when she last had a growth spurt. She needs reassurance and adjusted expectations, not pressure.

What this book covers

1
PHV and the physical reality — what is happening and why
2
The confidence crisis — why it happens and what you can do
3
The menstrual cycle — what every coach needs to know
4
ACL and injury risk — prevention built into every session
5
The 9v9 format (offside introduced here for the first time)
6
Social complexity — friendships, cliques and the changing group
7
Coaching language that works at this age
8
Body image and the sporting body
9
The goalkeeper through puberty — 9v9 specific
10
Session plans — five complete sessions
11
The dropout danger zone — recognition and response

What you’ll be able to do

  • Understand PHV and adjust your coaching during growth spurts
  • Run the warm-up that reduces ACL risk by up to 64%
  • Create an environment where menstrual health can be raised openly
  • Teach offside for the first time through play not whiteboards
  • Spot dropout signals early and make the right intervention
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Her Changing Game

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