I am a 50 year old female and would like to lose 40 lbs. I have a knee that gives me problems so I ride the exercise bike at the gym. How is the best way to interval train? What should my heartrate get up to at the max and how long should I keep it at the max and how long to recover? Any suggestions would be appreciated.

is it better to eat after exercising or exercise after eating

i love doing cardio however I just injured my ankle. what low impact cardio exercises would you reccommend that I do, if any?

How can I find energy Monday- Friday for working out. i seem to have no energy. ?? Help..Is it the food that I could possibly be eating that is giving me no energy.

I am in fairly good shape but feel like I am at a plateau. I started doing 6 100m sprints a day for 4 days. It felt great! I seriously thought I was seeing results already. After 4 days of hard sprints like this, my knees were in bad shape. The cartilage was swollen and even after a week of icing them multiliple times a day, my knees were weak. I've been advised to incorporate intervals of walking and jogging and not even thinking about sprints but I want to make sure this is worth my while. Intervals have helped me lose weight in the past but now that I'm at the weight that I want, they have not had the effect on me that sprints did. My question to you is, since my knees feel better now, is it safe to continue with sprints for my 'instant results' and continue doing the walking/jogging intervals for extra cardio? Also, how effective are sprints? Are they considered a good form of cardio? Thank you for your help!

My question is how can I lose the stomach fat and love handles? I really am interesting in losing this, but I do not know how to go by on losing it. Can you provide me with any help on what I need to do as far as any special type of exercising? Thanks!

What is the best thing you can do for dehydration? Should you take any down-time with regards to exercising? Thank you, heather

Hi - I am just getting into working out with the goal of losing a spare tire and getting more fit in general. I'm 6'3" and 270 lbs. My goal is to build more muscle and drop to a wieght of around 230 lbs. My question is - As a newbie to the workout world, I need some resources that will teach me about the best practices of getting fit. For example: How much of my workout should be cardio and how much should be wieght or resistance training? What to eat before and after a work out to maximize my efforts? I dont eat alot of vegitables particularly greens, what can I do to suppliment my diet? These are just a few of the questions that I have in mind! Thanks for pointing me in the right direction.

I have been working out 5 days a week cardio and light weight trainning. I have a pretty flat stomach but my major area I need help losing is the love handles in the back what is the best exercise to target that area? I eat well lots of fruits and vegtables make up 75% of my food for the day. I also work out for 1 hour 5 days a week but I am seeing no results on my lovehandles on the back. I am 130lbs and little over 5 feet tall so any help you can give would be great.

I am 30 years old. 5' 4" and 140 pounds. I want to lose 20 to 25 pounds as quickly as possible. I need a diet and exercise program that is effective. I am a busy single mother of two and I don't have a lot of time to waste. Any help for me out there?