Answer:
S in sport stands for specifity,
P stands for progression,
O stands for overload,
R stands for reversibility,
T stands for tedium.
She can use S to discover which body part specifically needs a workout.
She can use P to discover how much she's progressing
She can use O to discover how her muscles are working harder and growing.
She can use R to discover if her fitness will decline or reverse.
She can use T to discover other activities she could do, so she doesn't get bored.