My favourite trainers for years have been Asics. I feel trainers are a personal preference though Asics have a strong well-made brand and products.
I always keep a tub of lip gloss in my bag along with some Cow Shed or Body Shop hemp hand cream. Left over memories of trying to stay hydrated in cold Canadian winters
A bag of almonds/pistachios are a regular staple in my bag as I love to snack. I sometimes keep a small bag of Naturya hemp protein powder to add to a favourite smoothie post workout.
My favourite all time workout clothing is Lululemon which has finally hit the UK with some London shops. I wear their clothes day after day, week after week and despite being washed continually the colours and stitching stay intact forever.
And of course I keep a small pad lock and my ipod in my bag in case I want to drop into my own gym for a quick 20 minutes.
As orginally seen in my interview with The Fold London.