I’ve been looking for something that can help the more serious cardio exercise people with high level exercise for them.
This tweak helps exercisers maintain a higher heart rate longer to burn more calories and to have a greater fitness experience.
If you are into interval training or just going to that extra level, have a look this.
This will add a third element to the exercise that will really accompany the workout and take it to a whole other level or cardio burn.
Image credit: Robin McConnell