First conditionals 1 fill in the gaps in the following sentences using the first conditional. 1 if you (not/exercise) and eat healthily, you (put) on weight. 2 if we (go) to the cinema, we (buy) some popcorn. 3 if he (go) to the gym, he (get) quite muscular. 4 if you (not/dress) warmly, you (catch) a cold. 5 she (feel) sick if she (eat) too much chocolate. 6 if you (stretch) your arms and legs after exercise, you (feel) much better! 7 you (get) stomachache if you (eat) too much fruit. 8 if we (walk) there, it (take) us about twenty minutes.