The anaerobic threshold (AT), the point at which lactic acid starts to accumulates in the muscles, is considered to be somewhere between 85% and 90% of your maximum heart rate (HRmax) .
Ultimately, Windows Defender might fail to update the definitions itself for whatever reason. In such cases you must either force a definition update by navigating to the designated tab of Windows Defender or by downloading and installing the latest signature definitions. The Windows Defender Definition Updates are offline packages containing the most recent antivirus signature for Windows Defender. Once installed, they will make sure your PC is safe from the latest known viruses, spyware, PUPs, and malicious files.
Windows Defender is a feature of Windows Vista that provides protection from spyware and other potentially unwanted software. Windows Defender helps to ensure that Windows Vista computers protect the userÃ¢â¬â¢s privacy and remain efficient and reliable. Windows Defender is signature-based, using descriptions that uniquely identify spyware and other potentially unwanted software to detect and remove known applications.