Open WOD 21.1

For time:

1 bear crawl
10 double-unders
3 bear crawls
30 double-unders
6 bear crawls
60 double-unders
9 bear crawls
90 double-unders
15 bear crawls
150 double-unders
21 bear crawls
210 double-unders

Time cap: 15 min.