What happens to our physiology after exercise is called "E.P.O.C" Excess post-exercise oxygen consumption, it results in an increases in your metabolism & helps your body burn fat. How much fat you burn & how long for depends on what exercise you do & what food you choose to use to refuel.
Leave it all in the class and in that time "create a vision of who you want to be & race towards that.
Most of us think we are stuck in high school, fearing what others think of us, not taking risks, most people make a habit of designing there lives around what other people think of them.
Leave that habit behind. Emerson said "why should the way I feel depend upon the thoughts of someone else's head?"
How you act is who you become, doing the character is who we become.... just truly believe in that hour "The pain is temporary but pride is forever" with your sweat on the floor, you prove one thing to yourself as you left your comfort zone, you fought a good fight, you kept the faith and finished the race.
Excess post-exercise oxygen consumption "E.P.O.C" kicks in, more for some than others, you see the more muscle mass you have, the better your body will be at burning fat all day long. "Ladies this includes you as well, so don't be afraid of hitting the weights".
Think of it like this, you take a trip in your car, when you get to your destination you switch off the car, however your car’s engine stays warm for some time as it gradually cools to a resting temperature. Once a workout is over its a similar situation with your body as you now go about your daily routine, your body’s metabolism can continue to burn more calories then when it's at complete rest & as bonus those calories are going to come predominantly more from fat!.
Working out & eating meat/ protein although great unfortunately has the tendency to raise the acid levels in your body, Ideally you want to be as alkaline as possible, so if you take an evening spin class get your greens in & replace your simple carbs with vegetables.
Along with personal training I teach one class a week in Knightsbridge, a suggestion when you cycle or do a spin class, get yourself a decent pair of shoes I use "Pearl Izumi cycle shoes & padded cycle shorts". Get organized come prepared to work out hard & make it happen, when you invest in a little equipment, your making a firm commitment, so get your money's worth & make your fitness goals happen!.