going down hills and are much harder to turn over.
GREENSPEED has a quad model and most trikes can be fitted with an electric power assist motor that you can use going up hills or when you want to return home or to your vehicle faster.
Riding regular bikes for long periods of time makes you sore you know where and there is always the danger of falling over or crashing when you encounter something unexpected.
Plenty of videos of recumbent trikes on YouTube.
Dedicated trails are the safest places to go ride bikes and trikes.
Muscle Pharm products are useful for dedicated bike and recumbent trike riders.