Im wanting to lose weight and tone up, i am a gym member and currently do, body attack, body combat and a spin class, each once weekly, then a gym session weekly, treadmill & machnes, i have recently started increasing my treadmill session to 30 mins, i now have the time to add in one more session, at the time I can go, it's either a spin class or a gym session, with the intention of being able to up my running times. I don't have a vast amount to lose, so its which would be more beneficial to me in a toning, fitness sense, with weightloss being an added bonus. Can anyone advise pls?