A Consistent Rule: The Running Plan

Here are four one-week running plans built on two rules: 'run one day, rest one day' and 'add 1 km each time you run.' A: Mon 3km – Wed 4km – Fri 6km – Sun 7km B: Mon 3km – Tue 4km – Thu 5km – Sat 6km C: Mon 3km – Wed 4km – Fri 5km – Sat 6km D: Mon 3km – Wed 4km – Fri 5km – Sun 6km

Choose the plan where both rules (run every other day, increase by 1 km each time) are kept all the way through. It's easy to check only the distances and miss the day gaps, or check only the days and miss the distances.