While starting with the toughest CHISELL might sound like a good idea at first glance, you must understand that CHISELL models are not levels. More resistance will not get you better results. On the contrary, excessive resistance of the Tough Bite model will slow down your initial gains because it has very little range of motion. Most people who start with Tough Bite are left unsatisfied with their results and overall experience because it’s just too rigid to be used daily. We have designed this model for the seasoned CHISELL users who need that extra boost of resistance to push their gains beyond what’s reasonable. If you want the full CHISELL experience, don’t second guess it and get the Light Bite. This model will give the best initial results and it’s just so fun to chew on.