You can get into your best physical shape when you do as much as you can to keep your body moving. A good policy is to always hand-deliver mail that has been sent to you erroneously. If the address is near you, take the time to do something good, and get in shape.
Exercise your hamstrings with extended ankle leg curls. You can do these while either standing or sitting down, but make sure that you extend your ankle in the entire process. This elongates and stretches the hamstrings, as well as exercises the rest of your legs. This is especially beneficial to a runner.
You can save time in the gym by only resting as needed. It is not important to rest between every set. You can take rest breaks as needed. You will probably need less rest between your early sets, and more breaks as your muscles fatigue. This can cut your gym time by fifteen to twenty percent.
No matter which type of workout you choose to do, you need to stay hydrated. Drinking plenty of water before, during and after exercise helps to replace fluids that are lost during your workout. Staying hydrated means that you will have more energy to go that little bit further, and you will feel better overall.