Electric Pedal Assist, long popular in Europe, are perfect to put you in to the fun of riding right away, and then you can work on getting in shape. The battery/ motor technology has developed so much in the last several years, that these bikes are a joy to ride.
The most common technology now is the mid-drive motor- the motor is in the crank/ bottom bracket. Less common these days is the rear hub motor, still a great option but the rear wheel is weighted which effects how the bike rides. Most of the bikes we sell use the mid-drive motor system