1) I work out five days a week with my personal trainer, who comes home and gets me cracking on my fitness routine.
2) It is a gruelling mix of outdoor strength training and cardio, one hour a day.
3) She is working out the details for the launch of three new stores in Hyderabad, Pune and Delhi.
4) On weekends, I usually go for a swim.
5) No crash diets work. Nothing succeeds like home food.
All the sentences talk about fitness regime/routine of a person while the 3rd sentence talks about the launch of stores