i weigh +- 165 and bench 70lbs... i could do more but ive found that for now 70 allows me to do a good ammount of reps and not be totally wrecked at the end, but its no walk in the park either... i'd say start out with 40lbs and if it gets too easy go up in 5's but if you dont work out a lot its a good idea to start small and move up slowly.