Find your local Judo class. Look to make sure there are people there of your own size and weight. You can learn the most by training with people who are a similar size to yourself. But make sure that the coach is a Black (or Red) Belt (the highest rank, depending on your country), especially above 1st degree.
unassertive - inclined to timidity or lack of self-confidence; a shy unassertive person. 1  nonaggressive, unaggressive - not aggressive; not given to fighting or assertiveness. 2  timid - showing fear and lack of confidence.
To choose a definition is to plead a cause, so long as the word defined is strongly emotive. In persuasive definitions the evaluative component associated with a concept is left unaltered while the descriptive meaning is modified.