Visitors can check out the length of their guts and pump “blood” with a hand pump to find out how hard their heart muscles work at Body Lab, a permanent new gallery at the Exploratory Hands-on Science Centre, Bristol. The gallery reveals the human body’s entire workings including internal organs, cells and digestion, circulation and respiration, the skeleton and muscles, reproduction and genetics, senses and statistics. Tel: 0117 907 5000.