Ashmoret Mishal is an ultramarathoner, a fitness trainer and leadership coach. Mishal has launched a new site called Ultra Training, which includes guides to exercises that can be done without a trip to the gym.
This one focuses on the abs.
Tip from Mishal: "It's important to strengthen the abs because they are the main part of our core muscles, which include the lower back, hips and gluteus. Strong core muscles lead to better balance and stability, and are important for any physical activity as well. If you have strong abdominals, you also reduce the risk of sports injuries. So, remember – there is more to your investment than building a six-pack or lean tummy!"