I can see this part of the Bored getting quite busy and messy with posts going everywhere. What i suggest is each member to create his/her own topic with the title as:

Blog: *username*
or
Workout Log: *Username*

and then that member to post all their updates in their own topic. This will then save any confusion within topics with various members posting various workout updates. Other members can then comment on progresses people have made.

If the above does not make sence please PM me and i will edit.