The exercise began at about 11 a.m. and lasted about three hours.

The exercise can last from two months to a year.

The whole exercise lasts less than 10 minutes.

The exercise had lasted nearly nine days, and even Chavez was feeling it.

The exercise lasted for 15 days with 85,000 troops participating.

The exercise lasts 12 minutes and sounds like hail hitting a tin roof.

His exercises had lasted for close on three hours and he was beginning to feel that mental strain which ever accompanied such excesses of mind.

The military exercises lasted from 13 August to 3 October.

The exercise started at 6:25 am local time on 8 January 2006, a Sunday, and lasted about three hours.

Each exercise only lasts 15 seconds, and in that time you must complete as many repetitions as possible.