Athletes use a combination of strength training, diet, and nutritional supplementation to induce muscle hypertrophy. Muscle hypertrophy involves an increase in size of skeletal muscle through a growth in size of its component cells. Two factors contribute to hypertrophy: sarcoplasmic hypertrophy, which focuses more on increased muscle glycogen storage; and myofibrillar hypertrophy, which focuses more on increased myofibril size.
CD media. Compact discs hold 700MB of data (equivalent to 80 minutes of audio, hundreds of high-quality digital images, and small video files). Unlike DVDs, CDs are not yet available in double-sided or dual-layer formats.
To store a single PB would take over 745 million floppy disks or 1.5 million CD-ROM discs, clearly not an efficient way to collect a petabyte of information, but it's fun to think about! The movie Avatar needed about 1 PB of storage to render those graphics. It's estimated that the human brain can store around 2.5 PB of memory data.