*** ‘Sprint’ the last minute; this will only make a few seconds difference. No I mean faster than last time! And those seconds do count. Try and sprint with 2 minutes to go and when you feel your legs going just hold off (slow down very slightly) for 5-10 seconds and then sprint again all the way to the finish.
All the suggestions are starred:
*** 3 stars. IMHO it will work
** 2 stars. It might work
* 1 star. Can’t hurt
X 1 cross. It CAN hurt if done wrong.
All 50 tips are shown here as a series of posts : https://the5krunner.com/tag/how-to-get-a-5k-pb/ or on twitter using #howtogeta5kpb. They are all SHORT-TERM tips that will work in the next week or so with varying degrees of success.