Kit & Running.

I've invested in some proper running shoes:

Product description:

The New Balance 625 have a sporty style with a breathable mesh panelled upper featuring the New Balance logos to either side and tongue. These New Balance running trainers feature a thick moulded sole incorporating an Abzorb® DTS Dynamic Transition System for optimal cushioning, assisted by a thick padding to the ankle and heel for support. 

I love the simplicity of them, they're so lightweight and basic but feel so comfy and well-made and they've definitely improved my performance (although it may just be psychological).

Also, I ran 6 miles in one hour, which is my personal best.