Brumbies Warm Up
10min General activities including approx 4min of individual running, stretch, etc and 6 win of a dynamic ROM routine and locomotor drills
2min of a ball drill
6min of Units e.g. lineouts, starter plays for backs, kicking etc
2min of a Defense Drill
By the time we are back in the sheds the players have approx 5min before running out.
In my experience 20min is plenty of time and sometimes this can be shortened in hotter conditionins. I believe 30min is too long (for most players).