They do and I do Swing, but these small ones are beating the crap out of me. 5 years ago I went through some coronary issues, had to have some stents installed to open up the pipes. As a result I spent about 18 months on Plavix blood thinner which makes your skin paper thin it seems. As a result just touching it with the pins from trees like Live and Water Oaks make you bleed for at least 10 minutes. I usually carry a heavy duty paper wipe to blot blood with. It is truly a PITA! Day was where I wouldn't bleed at all unless it was big enough for stitches. The take away here is take care of yourself, get good control of chloresterol, eat healthy, and get good rest. I would say exercise, but that would be silly of me.