The best fitness resolution that works is one you do consistently. To make the best fitness gains, be honest about frequency, intensity, and types of training you undertake and the fitness goals you hope to achieve. Here are many reasons people cannot adhere to an exercise program, read on.  Do they sound familiar? Poor results?  One common reason people find it hard to stick to fitness-related resolutions is that they aren’t seeing results they want, though they stick to their program 110%. Make resolutions based on.