Before making a big investment in exercise equipment that may gather dust, first consider less expensive options for a quality home workout. (For Spectrum Health Beat) Between diminishing daylight and slippery sidewalks, it’s tempting to think that the right home exercise machine will keep us fit all through the gloomy season. If only. “It’s easy to go out and spend thousands of dollars on equipment, but often, it just sits and collects dust,” said Jodi George, DPT, a physical therapist…