Surviving the season

Has anyone any stats on which riders are doing the most racing. I'm curious to know how the pro's 'survive' the long season. Strategic breaks and for how long etc ....Targeted races and training races, 'sun tanning races' and DNF's help to balance out the stress of racing - they must be getting it down to a fine art.
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Most days: 1. Cavendish 88, 2. Rolland & Willems 85 4. Timmer 84 5. Dupont 82 (most in 2012: Ignatiev 104)
Most kms: 1. Cavendish 13,883, 2. Willems, 3. Van Poppel, 4. Timmer 5. Dupont (most in 2012: Ignatiev 16,256)