My BJJ class generally goes like this:
Circuit Training / Fitness - 10-20%
Kata - 0%
Kata orientated Line-Work (static drills) - 20-30%
Sparring Line-Work (resistant drills) - 20-30%
Sparring - 20-30%
Self Defense - 0-5%
Class structure is usually the same, but varies occasionally.
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"In case you ever wondered what it's like to be knocked out, it's like waking up from a nightmare only to discover it wasn't a dream." -Forrest Griffin