Of course, you can, may and want to hug in different positions. Try hugging in the bed, upside down, under water, in the air, standing on your hands etc. The only advice is here: "BE aware what you are doing and help your partner(s) to know what this all is about". It's good to learn to your control your body, so go ahead and start attending aerobic classes or just do some gymnastics by yourself. Otherwise you may find yourself in embarrishing situations when you fall on some strangers and they broke their bones.