Are you referring to the rest period on day 2?
3-5 minutes between sets provides ample time for full muscle recovery. If day 2 seems way to easy use a more aggressive angle so that you are about 2 under failure for each set.
or rest between days?
There workouts are pretty hard on our tendons which need about 48 hr to completely recover so to avoid potential tendinitis we have the 48 hr break.
Hope that helps
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